1/*
2Package config holds the configuration file definitions.
3
4Mox uses two config files:
5
61. mox.conf, also called the static configuration file.
72. domains.conf, also called the dynamic configuration file.
8
9The static configuration file is never reloaded during the lifetime of a
10running mox instance. After changes to mox.conf, mox must be restarted for the
11changes to take effect.
12
13The dynamic configuration file is reloaded automatically when it changes.
14If the file contains an error after the change, the reload is aborted and the
15previous version remains active.
16
17Below are "empty" config files, generated from the config file definitions in
18the source code, along with comments explaining the fields. Fields named "x" are
19placeholders for user-chosen map keys.
20
21# sconf
22
23The config files are in "sconf" format. Properties of sconf files:
24
25 - Indentation with tabs only.
26 - "#" as first non-whitespace character makes the line a comment. Lines with a
27 value cannot also have a comment.
28 - Values don't have syntax indicating their type. For example, strings are
29 not quoted/escaped and can never span multiple lines.
30 - Fields that are optional can be left out completely. But the value of an
31 optional field may itself have required fields.
32
33See https://pkg.go.dev/github.com/mjl-/sconf for details.
34
35# mox.conf
36
37 # NOTE: This config file is in 'sconf' format. Indent with tabs. Comments must be
38 # on their own line, they don't end a line. Do not escape or quote strings.
39 # Details: https://pkg.go.dev/github.com/mjl-/sconf.
40
41
42 # Directory where all data is stored, e.g. queue, accounts and messages, ACME TLS
43 # certs/keys. If this is a relative path, it is relative to the directory of
44 # mox.conf.
45 DataDir:
46
47 # Default log level, one of: error, info, debug, trace, traceauth, tracedata.
48 # Trace logs SMTP and IMAP protocol transcripts, with traceauth also messages with
49 # passwords, and tracedata on top of that also the full data exchanges (full
50 # messages), which can be a large amount of data.
51 LogLevel:
52
53 # Overrides of log level per package (e.g. queue, smtpclient, smtpserver,
54 # imapserver, spf, dkim, dmarc, dmarcdb, autotls, junk, mtasts, tlsrpt).
55 # (optional)
56 PackageLogLevels:
57 x:
58
59 # User to switch to after binding to all sockets as root. Default: mox. If the
60 # value is not a known user, it is parsed as integer and used as uid and gid.
61 # (optional)
62 User:
63
64 # If true, do not automatically fix file permissions when starting up. By default,
65 # mox will ensure reasonable owner/permissions on the working, data and config
66 # directories (and files), and mox binary (if present). (optional)
67 NoFixPermissions: false
68
69 # Full hostname of system, e.g. mail.<domain>
70 Hostname:
71
72 # If enabled, a single DNS TXT lookup of _updates.xmox.nl is done every 24h to
73 # check for a new release. Each time a new release is found, a changelog is
74 # fetched from https://updates.xmox.nl/changelog and delivered to the postmaster
75 # mailbox. (optional)
76 CheckUpdates: false
77
78 # In pedantic mode protocol violations (that happen in the wild) for SMTP/IMAP/etc
79 # result in errors instead of accepting such behaviour. (optional)
80 Pedantic: false
81
82 # Global TLS configuration, e.g. for additional Certificate Authorities. Used for
83 # outgoing SMTP connections, HTTPS requests. (optional)
84 TLS:
85
86 # (optional)
87 CA:
88
89 # (optional)
90 AdditionalToSystem: false
91
92 # (optional)
93 CertFiles:
94 -
95
96 # Automatic TLS configuration with ACME, e.g. through Let's Encrypt. The key is a
97 # name referenced in TLS configs, e.g. letsencrypt. (optional)
98 ACME:
99 x:
100
101 # For letsencrypt, use https://acme-v02.api.letsencrypt.org/directory.
102 DirectoryURL:
103
104 # How long before expiration to renew the certificate. Default is 30 days.
105 # (optional)
106 RenewBefore: 0s
107
108 # Email address to register at ACME provider. The provider can email you when
109 # certificates are about to expire. If you configure an address for which email is
110 # delivered by this server, keep in mind that TLS misconfigurations could result
111 # in such notification emails not arriving.
112 ContactEmail:
113
114 # TLS port for ACME validation, 443 by default. You should only override this if
115 # you cannot listen on port 443 directly. ACME will make requests to port 443, so
116 # you'll have to add an external mechanism to get the tls connection here, e.g. by
117 # configuring firewall-level port forwarding. Validation over the https port uses
118 # tls-alpn-01 with application-layer protocol negotiation, which essentially means
119 # the original tls connection must make it here unmodified, an https reverse proxy
120 # will not work. (optional)
121 Port: 0
122
123 # If set, used for suggested CAA DNS records, for restricting TLS certificate
124 # issuance to a Certificate Authority. If empty and DirectyURL is for Let's
125 # Encrypt, this value is set automatically to letsencrypt.org. (optional)
126 IssuerDomainName:
127
128 # ACME providers can require that a request for a new ACME account reference an
129 # existing non-ACME account known to the provider. External account binding
130 # references that account by a key id, and authorizes new ACME account requests by
131 # signing it with a key known both by the ACME client and ACME provider.
132 # (optional)
133 ExternalAccountBinding:
134
135 # Key identifier, from ACME provider.
136 KeyID:
137
138 # File containing the base64url-encoded key used to sign account requests with
139 # external account binding. The ACME provider will verify the account request is
140 # correctly signed by the key. File is evaluated relative to the directory of
141 # mox.conf.
142 KeyFile:
143
144 # File containing hash of admin password, for authentication in the web admin
145 # pages (if enabled). (optional)
146 AdminPasswordFile:
147
148 # Listeners are groups of IP addresses and services enabled on those IP addresses,
149 # such as SMTP/IMAP or internal endpoints for administration or Prometheus
150 # metrics. All listeners with SMTP/IMAP services enabled will serve all configured
151 # domains. If the listener is named 'public', it will get a few helpful additional
152 # configuration checks, for acme automatic tls certificates and monitoring of ips
153 # in dnsbls if those are configured.
154 Listeners:
155 x:
156
157 # Use 0.0.0.0 to listen on all IPv4 and/or :: to listen on all IPv6 addresses, but
158 # it is better to explicitly specify the IPs you want to use for email, as mox
159 # will make sure outgoing connections will only be made from one of those IPs. If
160 # both outgoing IPv4 and IPv6 connectivity is possible, and only one family has
161 # explicitly configured addresses, both address families are still used for
162 # outgoing connections. Use the "direct" transport to limit address families for
163 # outgoing connections.
164 IPs:
165 -
166
167 # If set, the mail server is configured behind a NAT and field IPs are internal
168 # instead of the public IPs, while NATIPs lists the public IPs. Used during
169 # IP-related DNS self-checks, such as for iprev, mx, spf, autoconfig,
170 # autodiscover, and for autotls. (optional)
171 NATIPs:
172 -
173
174 # Deprecated, use NATIPs instead. If set, IPs are not the public IPs, but are
175 # NATed. Skips IP-related DNS self-checks. (optional)
176 IPsNATed: false
177
178 # If empty, the config global Hostname is used. The internal services webadmin,
179 # webaccount, webmail and webapi only match requests to IPs, this hostname,
180 # "localhost". All except webadmin also match for any client settings domain.
181 # (optional)
182 Hostname:
183
184 # For SMTP/IMAP STARTTLS, direct TLS and HTTPS connections. (optional)
185 TLS:
186
187 # Name of provider from top-level configuration to use for ACME, e.g. letsencrypt.
188 # (optional)
189 ACME:
190
191 # Keys and certificates to use for this listener. The files are opened by the
192 # privileged root process and passed to the unprivileged mox process, so no
193 # special permissions are required on the files. If the private key will not be
194 # replaced when refreshing certificates, also consider adding the private key to
195 # HostPrivateKeyFiles and configuring DANE TLSA DNS records. (optional)
196 KeyCerts:
197 -
198
199 # Certificate including intermediate CA certificates, in PEM format.
200 CertFile:
201
202 # Private key for certificate, in PEM format. PKCS8 is recommended, but PKCS1 and
203 # EC private keys are recognized as well.
204 KeyFile:
205
206 # Minimum TLS version. Default: TLSv1.2. (optional)
207 MinVersion:
208
209 # Private keys used for ACME certificates. Specified explicitly so DANE TLSA DNS
210 # records can be generated, even before the certificates are requested. DANE is a
211 # mechanism to authenticate remote TLS certificates based on a public key or
212 # certificate specified in DNS, protected with DNSSEC. DANE is opportunistic and
213 # attempted when delivering SMTP with STARTTLS. The private key files must be in
214 # PEM format. PKCS8 is recommended, but PKCS1 and EC private keys are recognized
215 # as well. Only RSA 2048 bit and ECDSA P-256 keys are currently used. The first of
216 # each is used when requesting new certificates through ACME. (optional)
217 HostPrivateKeyFiles:
218 -
219
220 # Maximum size in bytes for incoming and outgoing messages. Default is 100MB.
221 # (optional)
222 SMTPMaxMessageSize: 0
223
224 # (optional)
225 SMTP:
226 Enabled: false
227
228 # Default 25. (optional)
229 Port: 0
230
231 # Do not offer STARTTLS to secure the connection. Not recommended. (optional)
232 NoSTARTTLS: false
233
234 # Do not accept incoming messages if STARTTLS is not active. Consider using in
235 # combination with an MTA-STS policy and/or DANE. A remote SMTP server may not
236 # support TLS and may not be able to deliver messages. Incoming messages for TLS
237 # reporting addresses ignore this setting and do not require TLS. (optional)
238 RequireSTARTTLS: false
239
240 # Do not announce the REQUIRETLS SMTP extension. Messages delivered using the
241 # REQUIRETLS extension should only be distributed onwards to servers also
242 # implementing the REQUIRETLS extension. In some situations, such as hosting
243 # mailing lists, this may not be feasible due to lack of support for the extension
244 # by mailing list subscribers. (optional)
245 NoRequireTLS: false
246
247 # Addresses of DNS block lists for incoming messages. Block lists are only
248 # consulted for connections/messages without enough reputation to make an
249 # accept/reject decision. This prevents sending IPs of all communications to the
250 # block list provider. If any of the listed DNSBLs contains a requested IP
251 # address, the message is rejected as spam. The DNSBLs are checked for healthiness
252 # before use, at most once per 4 hours. IPs we can send from are periodically
253 # checked for being in the configured DNSBLs. See MonitorDNSBLs in domains.conf to
254 # only monitor IPs we send from, without using those DNSBLs for incoming messages.
255 # Example DNSBLs: sbl.spamhaus.org, bl.spamcop.net. See
256 # https://www.spamhaus.org/sbl/ and https://www.spamcop.net/ for more information
257 # and terms of use. (optional)
258 DNSBLs:
259 -
260
261 # Delay before accepting a message from a first-time sender for the destination
262 # account. Default: 15s. (optional)
263 FirstTimeSenderDelay: 0s
264
265 # Override default setting for enabling TLS session tickets. Disabling session
266 # tickets may work around TLS interoperability issues. (optional)
267 TLSSessionTicketsDisabled: false
268
269 # SMTP for submitting email, e.g. by email applications. Starts out in plain text,
270 # can be upgraded to TLS with the STARTTLS command. Prefer using Submissions which
271 # is always a TLS connection. (optional)
272 Submission:
273 Enabled: false
274
275 # Default 587. (optional)
276 Port: 0
277
278 # Do not require STARTTLS. Since users must login, this means password may be sent
279 # without encryption. Not recommended. (optional)
280 NoRequireSTARTTLS: false
281
282 # SMTP over TLS for submitting email, by email applications. Requires a TLS
283 # config. (optional)
284 Submissions:
285 Enabled: false
286
287 # Default 465. (optional)
288 Port: 0
289
290 # Additionally enable submission on HTTPS port 443 via TLS ALPN. TLS Application
291 # Layer Protocol Negotiation allows clients to request a specific protocol from
292 # the server as part of the TLS connection setup. When this setting is enabled and
293 # a client requests the 'smtp' protocol after TLS, it will be able to talk SMTP to
294 # Mox on port 443. This is meant to be useful as a censorship circumvention
295 # technique for Delta Chat. (optional)
296 EnabledOnHTTPS: false
297
298 # IMAP for reading email, by email applications. Starts out in plain text, can be
299 # upgraded to TLS with the STARTTLS command. Prefer using IMAPS instead which is
300 # always a TLS connection. (optional)
301 IMAP:
302 Enabled: false
303
304 # Default 143. (optional)
305 Port: 0
306
307 # Enable this only when the connection is otherwise encrypted (e.g. through a
308 # VPN). (optional)
309 NoRequireSTARTTLS: false
310
311 # IMAP over TLS for reading email, by email applications. Requires a TLS config.
312 # (optional)
313 IMAPS:
314 Enabled: false
315
316 # Default 993. (optional)
317 Port: 0
318
319 # Additionally enable IMAP on HTTPS port 443 via TLS ALPN. TLS Application Layer
320 # Protocol Negotiation allows clients to request a specific protocol from the
321 # server as part of the TLS connection setup. When this setting is enabled and a
322 # client requests the 'imap' protocol after TLS, it will be able to talk IMAP to
323 # Mox on port 443. This is meant to be useful as a censorship circumvention
324 # technique for Delta Chat. (optional)
325 EnabledOnHTTPS: false
326
327 # Account web interface, for email users wanting to change their accounts, e.g.
328 # set new password, set new delivery rulesets. Default path is /. (optional)
329 AccountHTTP:
330 Enabled: false
331
332 # Default 80 for HTTP and 443 for HTTPS. See Hostname at Listener for hostname
333 # matching behaviour. (optional)
334 Port: 0
335
336 # Path to serve requests on. (optional)
337 Path:
338
339 # If set, X-Forwarded-* headers are used for the remote IP address for rate
340 # limiting and for the "secure" status of cookies. (optional)
341 Forwarded: false
342
343 # Account web interface listener like AccountHTTP, but for HTTPS. Requires a TLS
344 # config. (optional)
345 AccountHTTPS:
346 Enabled: false
347
348 # Default 80 for HTTP and 443 for HTTPS. See Hostname at Listener for hostname
349 # matching behaviour. (optional)
350 Port: 0
351
352 # Path to serve requests on. (optional)
353 Path:
354
355 # If set, X-Forwarded-* headers are used for the remote IP address for rate
356 # limiting and for the "secure" status of cookies. (optional)
357 Forwarded: false
358
359 # Admin web interface, for managing domains, accounts, etc. Default path is
360 # /admin/. Preferably only enable on non-public IPs. Hint: use 'ssh -L
361 # 8080:localhost:80 you@yourmachine' and open http://localhost:8080/admin/, or set
362 # up a tunnel (e.g. WireGuard) and add its IP to the mox 'internal' listener.
363 # (optional)
364 AdminHTTP:
365 Enabled: false
366
367 # Default 80 for HTTP and 443 for HTTPS. See Hostname at Listener for hostname
368 # matching behaviour. (optional)
369 Port: 0
370
371 # Path to serve requests on. (optional)
372 Path:
373
374 # If set, X-Forwarded-* headers are used for the remote IP address for rate
375 # limiting and for the "secure" status of cookies. (optional)
376 Forwarded: false
377
378 # Admin web interface listener like AdminHTTP, but for HTTPS. Requires a TLS
379 # config. (optional)
380 AdminHTTPS:
381 Enabled: false
382
383 # Default 80 for HTTP and 443 for HTTPS. See Hostname at Listener for hostname
384 # matching behaviour. (optional)
385 Port: 0
386
387 # Path to serve requests on. (optional)
388 Path:
389
390 # If set, X-Forwarded-* headers are used for the remote IP address for rate
391 # limiting and for the "secure" status of cookies. (optional)
392 Forwarded: false
393
394 # Webmail client, for reading email. Default path is /webmail/. (optional)
395 WebmailHTTP:
396 Enabled: false
397
398 # Default 80 for HTTP and 443 for HTTPS. See Hostname at Listener for hostname
399 # matching behaviour. (optional)
400 Port: 0
401
402 # Path to serve requests on. (optional)
403 Path:
404
405 # If set, X-Forwarded-* headers are used for the remote IP address for rate
406 # limiting and for the "secure" status of cookies. (optional)
407 Forwarded: false
408
409 # Webmail client, like WebmailHTTP, but for HTTPS. Requires a TLS config.
410 # (optional)
411 WebmailHTTPS:
412 Enabled: false
413
414 # Default 80 for HTTP and 443 for HTTPS. See Hostname at Listener for hostname
415 # matching behaviour. (optional)
416 Port: 0
417
418 # Path to serve requests on. (optional)
419 Path:
420
421 # If set, X-Forwarded-* headers are used for the remote IP address for rate
422 # limiting and for the "secure" status of cookies. (optional)
423 Forwarded: false
424
425 # Like WebAPIHTTP, but with plain HTTP, without TLS. (optional)
426 WebAPIHTTP:
427 Enabled: false
428
429 # Default 80 for HTTP and 443 for HTTPS. See Hostname at Listener for hostname
430 # matching behaviour. (optional)
431 Port: 0
432
433 # Path to serve requests on. (optional)
434 Path:
435
436 # If set, X-Forwarded-* headers are used for the remote IP address for rate
437 # limiting and for the "secure" status of cookies. (optional)
438 Forwarded: false
439
440 # WebAPI, a simple HTTP/JSON-based API for email, with HTTPS (requires a TLS
441 # config). Default path is /webapi/. (optional)
442 WebAPIHTTPS:
443 Enabled: false
444
445 # Default 80 for HTTP and 443 for HTTPS. See Hostname at Listener for hostname
446 # matching behaviour. (optional)
447 Port: 0
448
449 # Path to serve requests on. (optional)
450 Path:
451
452 # If set, X-Forwarded-* headers are used for the remote IP address for rate
453 # limiting and for the "secure" status of cookies. (optional)
454 Forwarded: false
455
456 # Serve prometheus metrics, for monitoring. You should not enable this on a public
457 # IP. (optional)
458 MetricsHTTP:
459 Enabled: false
460
461 # Default 8010. (optional)
462 Port: 0
463
464 # Serve /debug/pprof/ for profiling a running mox instance. Do not enable this on
465 # a public IP! (optional)
466 PprofHTTP:
467 Enabled: false
468
469 # Default 8011. (optional)
470 Port: 0
471
472 # Serve autoconfiguration/autodiscovery to simplify configuring email
473 # applications, will use port 443. Requires a TLS config. (optional)
474 AutoconfigHTTPS:
475 Enabled: false
476
477 # TLS port, 443 by default. You should only override this if you cannot listen on
478 # port 443 directly. Autoconfig requests will be made to port 443, so you'll have
479 # to add an external mechanism to get the connection here, e.g. by configuring
480 # port forwarding. (optional)
481 Port: 0
482
483 # If set, plain HTTP instead of HTTPS is spoken on the configured port. Can be
484 # useful when the autoconfig domain is reverse proxied. (optional)
485 NonTLS: false
486
487 # Serve MTA-STS policies describing SMTP TLS requirements. Requires a TLS config.
488 # (optional)
489 MTASTSHTTPS:
490 Enabled: false
491
492 # TLS port, 443 by default. You should only override this if you cannot listen on
493 # port 443 directly. MTA-STS requests will be made to port 443, so you'll have to
494 # add an external mechanism to get the connection here, e.g. by configuring port
495 # forwarding. (optional)
496 Port: 0
497
498 # If set, plain HTTP instead of HTTPS is spoken on the configured port. Can be
499 # useful when the mta-sts domain is reverse proxied. (optional)
500 NonTLS: false
501
502 # All configured WebHandlers will serve on an enabled listener. (optional)
503 WebserverHTTP:
504 Enabled: false
505
506 # Port for plain HTTP (non-TLS) webserver. (optional)
507 Port: 0
508
509 # All configured WebHandlers will serve on an enabled listener. Either ACME must
510 # be configured, or for each WebHandler domain a TLS certificate must be
511 # configured. (optional)
512 WebserverHTTPS:
513 Enabled: false
514
515 # Port for HTTPS webserver. (optional)
516 Port: 0
517
518 # Destination for emails delivered to postmaster addresses: a plain 'postmaster'
519 # without domain, 'postmaster@<hostname>' (also for each listener with SMTP
520 # enabled), and as fallback for each domain without explicitly configured
521 # postmaster destination.
522 Postmaster:
523 Account:
524
525 # E.g. Postmaster or Inbox.
526 Mailbox:
527
528 # Destination for per-host TLS reports (TLSRPT). TLS reports can be per recipient
529 # domain (for MTA-STS), or per MX host (for DANE). The per-domain TLS reporting
530 # configuration is in domains.conf. This is the TLS reporting configuration for
531 # this host. If absent, no host-based TLSRPT address is configured, and no host
532 # TLSRPT DNS record is suggested. (optional)
533 HostTLSRPT:
534
535 # Account to deliver TLS reports to. Typically same account as for postmaster.
536 Account:
537
538 # Mailbox to deliver TLS reports to. Recommended value: TLSRPT.
539 Mailbox:
540
541 # Localpart at hostname to accept TLS reports at. Recommended value: tls-reports.
542 Localpart:
543
544 # Mailboxes to create for new accounts. Inbox is always created. Mailboxes can be
545 # given a 'special-use' role, which are understood by most mail clients. If
546 # absent/empty, the following mailboxes are created: Sent, Archive, Trash, Drafts
547 # and Junk. (optional)
548 InitialMailboxes:
549
550 # Special-use roles to mailbox to create. (optional)
551 SpecialUse:
552
553 # (optional)
554 Sent:
555
556 # (optional)
557 Archive:
558
559 # (optional)
560 Trash:
561
562 # (optional)
563 Draft:
564
565 # (optional)
566 Junk:
567
568 # Regular, non-special-use mailboxes to create. (optional)
569 Regular:
570 -
571
572 # Deprecated in favor of InitialMailboxes. Mailboxes to create when adding an
573 # account. Inbox is always created. If no mailboxes are specified, the following
574 # are automatically created: Sent, Archive, Trash, Drafts and Junk. (optional)
575 DefaultMailboxes:
576 -
577
578 # Transport are mechanisms for delivering messages. Transports can be referenced
579 # from Routes in accounts, domains and the global configuration. There is always
580 # an implicit/fallback delivery transport doing direct delivery with SMTP from the
581 # outgoing message queue. Transports are typically only configured when using
582 # smarthosts, i.e. when delivering through another SMTP server. Zero or one
583 # transport methods must be set in a transport, never multiple. When using an
584 # external party to send email for a domain, keep in mind you may have to add
585 # their IP address to your domain's SPF record, and possibly additional DKIM
586 # records. (optional)
587 Transports:
588 x:
589
590 # Submission SMTP over a TLS connection to submit email to a remote queue.
591 # (optional)
592 Submissions:
593
594 # Host name to connect to and for verifying its TLS certificate.
595 Host:
596
597 # If unset or 0, the default port for submission(s)/smtp is used: 25 for SMTP, 465
598 # for submissions (with TLS), 587 for submission (possibly with STARTTLS).
599 # (optional)
600 Port: 0
601
602 # If set an unverifiable remote TLS certificate during STARTTLS is accepted.
603 # (optional)
604 STARTTLSInsecureSkipVerify: false
605
606 # If set for submission or smtp transport, do not attempt STARTTLS on the
607 # connection. Authentication credentials and messages will be transferred in clear
608 # text. (optional)
609 NoSTARTTLS: false
610
611 # If set, authentication credentials for the remote server. (optional)
612 Auth:
613 Username:
614 Password:
615
616 # Allowed authentication mechanisms. Defaults to SCRAM-SHA-256-PLUS,
617 # SCRAM-SHA-256, SCRAM-SHA-1-PLUS, SCRAM-SHA-1, CRAM-MD5. Not included by default:
618 # PLAIN. Specify the strongest mechanism known to be implemented by the server to
619 # prevent mechanism downgrade attacks. (optional)
620 Mechanisms:
621 -
622
623 # Submission SMTP over a plain TCP connection (possibly with STARTTLS) to submit
624 # email to a remote queue. (optional)
625 Submission:
626
627 # Host name to connect to and for verifying its TLS certificate.
628 Host:
629
630 # If unset or 0, the default port for submission(s)/smtp is used: 25 for SMTP, 465
631 # for submissions (with TLS), 587 for submission (possibly with STARTTLS).
632 # (optional)
633 Port: 0
634
635 # If set an unverifiable remote TLS certificate during STARTTLS is accepted.
636 # (optional)
637 STARTTLSInsecureSkipVerify: false
638
639 # If set for submission or smtp transport, do not attempt STARTTLS on the
640 # connection. Authentication credentials and messages will be transferred in clear
641 # text. (optional)
642 NoSTARTTLS: false
643
644 # If set, authentication credentials for the remote server. (optional)
645 Auth:
646 Username:
647 Password:
648
649 # Allowed authentication mechanisms. Defaults to SCRAM-SHA-256-PLUS,
650 # SCRAM-SHA-256, SCRAM-SHA-1-PLUS, SCRAM-SHA-1, CRAM-MD5. Not included by default:
651 # PLAIN. Specify the strongest mechanism known to be implemented by the server to
652 # prevent mechanism downgrade attacks. (optional)
653 Mechanisms:
654 -
655
656 # SMTP over a plain connection (possibly with STARTTLS), typically for
657 # old-fashioned unauthenticated relaying to a remote queue. (optional)
658 SMTP:
659
660 # Host name to connect to and for verifying its TLS certificate.
661 Host:
662
663 # If unset or 0, the default port for submission(s)/smtp is used: 25 for SMTP, 465
664 # for submissions (with TLS), 587 for submission (possibly with STARTTLS).
665 # (optional)
666 Port: 0
667
668 # If set an unverifiable remote TLS certificate during STARTTLS is accepted.
669 # (optional)
670 STARTTLSInsecureSkipVerify: false
671
672 # If set for submission or smtp transport, do not attempt STARTTLS on the
673 # connection. Authentication credentials and messages will be transferred in clear
674 # text. (optional)
675 NoSTARTTLS: false
676
677 # If set, authentication credentials for the remote server. (optional)
678 Auth:
679 Username:
680 Password:
681
682 # Allowed authentication mechanisms. Defaults to SCRAM-SHA-256-PLUS,
683 # SCRAM-SHA-256, SCRAM-SHA-1-PLUS, SCRAM-SHA-1, CRAM-MD5. Not included by default:
684 # PLAIN. Specify the strongest mechanism known to be implemented by the server to
685 # prevent mechanism downgrade attacks. (optional)
686 Mechanisms:
687 -
688
689 # Like regular direct delivery, but makes outgoing connections through a SOCKS
690 # proxy. (optional)
691 Socks:
692
693 # Address of SOCKS proxy, of the form host:port or ip:port.
694 Address:
695
696 # IP addresses connections from the SOCKS server will originate from. This IP
697 # addresses should be configured in the SPF record (keep in mind DNS record time
698 # to live (TTL) when adding a SOCKS proxy). Reverse DNS should be set up for these
699 # address, resolving to RemoteHostname. These are typically the IPv4 and IPv6
700 # address for the host in the Address field.
701 RemoteIPs:
702 -
703
704 # Hostname belonging to RemoteIPs. This name is used during in SMTP EHLO. This is
705 # typically the hostname of the host in the Address field.
706 RemoteHostname:
707
708 # Like regular direct delivery, but allows to tweak outgoing connections.
709 # (optional)
710 Direct:
711
712 # If set, outgoing SMTP connections will *NOT* use IPv4 addresses to connect to
713 # remote SMTP servers. (optional)
714 DisableIPv4: false
715
716 # If set, outgoing SMTP connections will *NOT* use IPv6 addresses to connect to
717 # remote SMTP servers. (optional)
718 DisableIPv6: false
719
720 # Do not send DMARC reports (aggregate only). By default, aggregate reports on
721 # DMARC evaluations are sent to domains if their DMARC policy requests them.
722 # Reports are sent at whole hours, with a minimum of 1 hour and maximum of 24
723 # hours, rounded up so a whole number of intervals cover 24 hours, aligned at
724 # whole days in UTC. Reports are sent from the postmaster@<mailhostname> address.
725 # (optional)
726 NoOutgoingDMARCReports: false
727
728 # Do not send TLS reports. By default, reports about failed SMTP STARTTLS
729 # connections and related MTA-STS/DANE policies are sent to domains if their
730 # TLSRPT DNS record requests them. Reports covering a 24 hour UTC interval are
731 # sent daily. Reports are sent from the postmaster address of the configured
732 # domain the mailhostname is in. If there is no such domain, or it does not have
733 # DKIM configured, no reports are sent. (optional)
734 NoOutgoingTLSReports: false
735
736 # Also send TLS reports if there were no SMTP STARTTLS connection failures. By
737 # default, reports are only sent when at least one failure occurred. If a report
738 # is sent, it does always include the successful connection counts as well.
739 # (optional)
740 OutgoingTLSReportsForAllSuccess: false
741
742 # Default maximum total message size in bytes for each individual account, only
743 # applicable if greater than zero. Can be overridden per account. Attempting to
744 # add new messages to an account beyond its maximum total size will result in an
745 # error. Useful to prevent a single account from filling storage. The quota only
746 # applies to the email message files, not to any file system overhead and also not
747 # the message index database file (account for approximately 15% overhead).
748 # (optional)
749 QuotaMessageSize: 0
750
751# domains.conf
752
753 # NOTE: This config file is in 'sconf' format. Indent with tabs. Comments must be
754 # on their own line, they don't end a line. Do not escape or quote strings.
755 # Details: https://pkg.go.dev/github.com/mjl-/sconf.
756
757
758 # Domains for which email is accepted. For internationalized domains, use their
759 # IDNA names in UTF-8.
760 Domains:
761 x:
762
763 # Disabled domains can be useful during/before migrations. Domains that are
764 # disabled can still be configured like normal, including adding addresses using
765 # the domain to accounts. However, disabled domains: 1. Do not try to fetch ACME
766 # certificates. TLS connections to host names involving the email domain will
767 # fail. A TLS certificate for the hostname (that wil be used as MX) itself will be
768 # requested. 2. Incoming deliveries over SMTP are rejected with a temporary error
769 # '450 4.2.1 recipient domain temporarily disabled'. 3. Submissions over SMTP
770 # using an (envelope) SMTP MAIL FROM address or message 'From' address of a
771 # disabled domain will be rejected with a temporary error '451 4.3.0 sender domain
772 # temporarily disabled'. Note that accounts with addresses at disabled domains can
773 # still log in and read email (unless the account itself is disabled). (optional)
774 Disabled: false
775
776 # Free-form description of domain. (optional)
777 Description:
778
779 # Hostname for client settings instead of the mail server hostname. E.g.
780 # mail.<domain>. For future migration to another mail operator without requiring
781 # all clients to update their settings, it is convenient to have client settings
782 # that reference a subdomain of the hosted domain instead of the hostname of the
783 # server where the mail is currently hosted. If empty, the hostname of the mail
784 # server is used for client configurations. Unicode name. (optional)
785 ClientSettingsDomain:
786
787 # If not empty, only the string before the separator is used to for email delivery
788 # decisions. For example, if set to "+", you+anything@example.com will be
789 # delivered to you@example.com. (optional)
790 LocalpartCatchallSeparator:
791
792 # If set, upper/lower case is relevant for email delivery. (optional)
793 LocalpartCaseSensitive: false
794
795 # With DKIM signing, a domain is taking responsibility for (content of) emails it
796 # sends, letting receiving mail servers build up a (hopefully positive) reputation
797 # of the domain, which can help with mail delivery. (optional)
798 DKIM:
799
800 # Emails can be DKIM signed. Config parameters are per selector. A DNS record must
801 # be created for each selector. Add the name to Sign to use the selector for
802 # signing messages.
803 Selectors:
804 x:
805
806 # sha256 (default) or (older, not recommended) sha1. (optional)
807 Hash:
808
809 # (optional)
810 Canonicalization:
811
812 # If set, some modifications to the headers (mostly whitespace) are allowed.
813 HeaderRelaxed: false
814
815 # If set, some whitespace modifications to the message body are allowed.
816 BodyRelaxed: false
817
818 # Headers to sign with DKIM. If empty, a reasonable default set of headers is
819 # selected. (optional)
820 Headers:
821 -
822
823 # If set, don't prevent duplicate headers from being added. Not recommended.
824 # (optional)
825 DontSealHeaders: false
826
827 # Period a signature is valid after signing, as duration, e.g. 72h. The period
828 # should be enough for delivery at the final destination, potentially with several
829 # hops/relays. In the order of days at least. (optional)
830 Expiration:
831
832 # Either an RSA or ed25519 private key file in PKCS8 PEM form.
833 PrivateKeyFile:
834
835 # List of selectors that emails will be signed with. (optional)
836 Sign:
837 -
838
839 # With DMARC, a domain publishes, in DNS, a policy on how other mail servers
840 # should handle incoming messages with the From-header matching this domain and/or
841 # subdomain (depending on the configured alignment). Receiving mail servers use
842 # this to build up a reputation of this domain, which can help with mail delivery.
843 # A domain can also publish an email address to which reports about DMARC
844 # verification results can be sent by verifying mail servers, useful for
845 # monitoring. Incoming DMARC reports are automatically parsed, validated, added to
846 # metrics and stored in the reporting database for later display in the admin web
847 # pages. (optional)
848 DMARC:
849
850 # Address-part before the @ that accepts DMARC reports. Must be
851 # non-internationalized. Recommended value: dmarc-reports.
852 Localpart:
853
854 # Alternative domain for reporting address, for incoming reports. Typically empty,
855 # causing the domain wherein this config exists to be used. Can be used to receive
856 # reports for domains that aren't fully hosted on this server. Configure such a
857 # domain as a hosted domain without making all the DNS changes, and configure this
858 # field with a domain that is fully hosted on this server, so the localpart and
859 # the domain of this field form a reporting address. Then only update the DMARC
860 # DNS record for the not fully hosted domain, ensuring the reporting address is
861 # specified in its "rua" field as shown in the suggested DNS settings. Unicode
862 # name. (optional)
863 Domain:
864
865 # Account to deliver to.
866 Account:
867
868 # Mailbox to deliver to, e.g. DMARC.
869 Mailbox:
870
871 # MTA-STS is a mechanism that allows publishing a policy with requirements for
872 # WebPKI-verified SMTP STARTTLS connections for email delivered to a domain.
873 # Existence of a policy is announced in a DNS TXT record (often
874 # unprotected/unverified, MTA-STS's weak spot). If a policy exists, it is fetched
875 # with a WebPKI-verified HTTPS request. The policy can indicate that
876 # WebPKI-verified SMTP STARTTLS is required, and which MX hosts (optionally with a
877 # wildcard pattern) are allowd. MX hosts to deliver to are still taken from DNS
878 # (again, not necessarily protected/verified), but messages will only be delivered
879 # to domains matching the MX hosts from the published policy. Mail servers look up
880 # the MTA-STS policy when first delivering to a domain, then keep a cached copy,
881 # periodically checking the DNS record if a new policy is available, and fetching
882 # and caching it if so. To update a policy, first serve a new policy with an
883 # updated policy ID, then update the DNS record (not the other way around). To
884 # remove an enforced policy, publish an updated policy with mode "none" for a long
885 # enough period so all cached policies have been refreshed (taking DNS TTL and
886 # policy max age into account), then remove the policy from DNS, wait for TTL to
887 # expire, and stop serving the policy. (optional)
888 MTASTS:
889
890 # Policies are versioned. The version must be specified in the DNS record. If you
891 # change a policy, first change it here to update the served policy, then update
892 # the DNS record with the updated policy ID.
893 PolicyID:
894
895 # If set to "enforce", a remote SMTP server will not deliver email to us if it
896 # cannot make a WebPKI-verified SMTP STARTTLS connection. In mode "testing",
897 # deliveries can be done without verified TLS, but errors will be reported through
898 # TLS reporting. In mode "none", verified TLS is not required, used for phasing
899 # out an MTA-STS policy.
900 Mode:
901
902 # How long a remote mail server is allowed to cache a policy. Typically 1 or
903 # several weeks.
904 MaxAge: 0s
905
906 # List of server names allowed for SMTP. If empty, the configured hostname is set.
907 # Host names can contain a wildcard (*) as a leading label (matching a single
908 # label, e.g. *.example matches host.example, not sub.host.example). (optional)
909 MX:
910 -
911
912 # With TLSRPT a domain specifies in DNS where reports about encountered SMTP TLS
913 # behaviour should be sent. Useful for monitoring. Incoming TLS reports are
914 # automatically parsed, validated, added to metrics and stored in the reporting
915 # database for later display in the admin web pages. (optional)
916 TLSRPT:
917
918 # Address-part before the @ that accepts TLSRPT reports. Recommended value:
919 # tls-reports.
920 Localpart:
921
922 # Alternative domain for reporting address, for incoming reports. Typically empty,
923 # causing the domain wherein this config exists to be used. Can be used to receive
924 # reports for domains that aren't fully hosted on this server. Configure such a
925 # domain as a hosted domain without making all the DNS changes, and configure this
926 # field with a domain that is fully hosted on this server, so the localpart and
927 # the domain of this field form a reporting address. Then only update the TLSRPT
928 # DNS record for the not fully hosted domain, ensuring the reporting address is
929 # specified in its "rua" field as shown in the suggested DNS settings. Unicode
930 # name. (optional)
931 Domain:
932
933 # Account to deliver to.
934 Account:
935
936 # Mailbox to deliver to, e.g. TLSRPT.
937 Mailbox:
938
939 # Routes for delivering outgoing messages through the queue. Each delivery attempt
940 # evaluates account routes, these domain routes and finally global routes. The
941 # transport of the first matching route is used in the delivery attempt. If no
942 # routes match, which is the default with no configured routes, messages are
943 # delivered directly from the queue. (optional)
944 Routes:
945 -
946
947 # Matches if the envelope from domain matches one of the configured domains, or if
948 # the list is empty. If a domain starts with a dot, prefixes of the domain also
949 # match. (optional)
950 FromDomain:
951 -
952
953 # Like FromDomain, but matching against the envelope to domain. (optional)
954 ToDomain:
955 -
956
957 # Matches if at least this many deliveries have already been attempted. This can
958 # be used to attempt sending through a smarthost when direct delivery has failed
959 # for several times. (optional)
960 MinimumAttempts: 0
961 Transport:
962
963 # Aliases that cause messages to be delivered to one or more locally configured
964 # addresses. Keys are localparts (encoded, as they appear in email addresses).
965 # (optional)
966 Aliases:
967 x:
968
969 # Expanded addresses to deliver to. These must currently be of addresses of local
970 # accounts. To prevent duplicate messages, a member address that is also an
971 # explicit recipient in the SMTP transaction will only have the message delivered
972 # once. If the address in the message From header is a member, that member also
973 # won't receive the message.
974 Addresses:
975 -
976
977 # If true, anyone can send messages to the list. Otherwise only members, based on
978 # message From address, which is assumed to be DMARC-like-verified. (optional)
979 PostPublic: false
980
981 # If true, members can see addresses of members. (optional)
982 ListMembers: false
983
984 # If true, members are allowed to send messages with this alias address in the
985 # message From header. (optional)
986 AllowMsgFrom: false
987
988 # Accounts represent mox users, each with a password and email address(es) to
989 # which email can be delivered (possibly at different domains). Each account has
990 # its own on-disk directory holding its messages and index database. An account
991 # name is not an email address.
992 Accounts:
993 x:
994
995 # Webhooks for events about outgoing deliveries. (optional)
996 OutgoingWebhook:
997
998 # URL to POST webhooks.
999 URL:
1000
1001 # If not empty, value of Authorization header to add to HTTP requests. (optional)
1002 Authorization:
1003
1004 # Events to send outgoing delivery notifications for. If absent, all events are
1005 # sent. Valid values: delivered, suppressed, delayed, failed, relayed, expanded,
1006 # canceled, unrecognized. (optional)
1007 Events:
1008 -
1009
1010 # Webhooks for events about incoming deliveries over SMTP. (optional)
1011 IncomingWebhook:
1012
1013 # URL to POST webhooks to for incoming deliveries over SMTP.
1014 URL:
1015
1016 # If not empty, value of Authorization header to add to HTTP requests. (optional)
1017 Authorization:
1018
1019 # Login addresses that cause outgoing email to be sent with SMTP MAIL FROM
1020 # addresses with a unique id after the localpart catchall separator (which must be
1021 # enabled when addresses are specified here). Any delivery status notifications
1022 # (DSN, e.g. for bounces), can be related to the original message and recipient
1023 # with unique id's. You can login to an account with any valid email address,
1024 # including variants with the localpart catchall separator. You can use this
1025 # mechanism to both send outgoing messages with and without unique fromid for a
1026 # given email address. With the webapi and webmail, a unique id will be generated.
1027 # For submission, the id from the SMTP MAIL FROM command is used if present, and a
1028 # unique id is generated otherwise. (optional)
1029 FromIDLoginAddresses:
1030 -
1031
1032 # Period to keep messages retired from the queue (delivered or failed) around.
1033 # Keeping retired messages is useful for maintaining the suppression list for
1034 # transactional email, for matching incoming DSNs to sent messages, and for
1035 # debugging. The time at which to clean up (remove) is calculated at retire time.
1036 # E.g. 168h (1 week). (optional)
1037 KeepRetiredMessagePeriod: 0s
1038
1039 # Period to keep webhooks retired from the queue (delivered or failed) around.
1040 # Useful for debugging. The time at which to clean up (remove) is calculated at
1041 # retire time. E.g. 168h (1 week). (optional)
1042 KeepRetiredWebhookPeriod: 0s
1043
1044 # If non-empty, login attempts on all protocols (e.g. SMTP/IMAP, web interfaces)
1045 # is rejected with this error message. Useful during migrations. Incoming
1046 # deliveries for addresses of this account are still accepted as normal.
1047 # (optional)
1048 LoginDisabled:
1049
1050 # Default domain for account. Deprecated behaviour: If a destination is not a full
1051 # address but only a localpart, this domain is added to form a full address.
1052 Domain:
1053
1054 # Free form description, e.g. full name or alternative contact info. (optional)
1055 Description:
1056
1057 # Full name, to use in message From header when composing messages in webmail. Can
1058 # be overridden per destination. (optional)
1059 FullName:
1060
1061 # Destinations, keys are email addresses (with IDNA domains). All destinations are
1062 # allowed for logging in with IMAP/SMTP/webmail. If no destinations are
1063 # configured, the account can not login. If the address is of the form '@domain',
1064 # i.e. with localpart missing, it serves as a catchall for the domain, matching
1065 # all messages that are not explicitly configured. Deprecated behaviour: If the
1066 # address is not a full address but a localpart, it is combined with Domain to
1067 # form a full address. (optional)
1068 Destinations:
1069 x:
1070
1071 # Mailbox to deliver to if none of Rulesets match. Default: Inbox. (optional)
1072 Mailbox:
1073
1074 # Delivery rules based on message and SMTP transaction. You may want to match each
1075 # mailing list by SMTP MailFrom address, VerifiedDomain and/or List-ID header
1076 # (typically <listname.example.org> if the list address is listname@example.org),
1077 # delivering them to their own mailbox. (optional)
1078 Rulesets:
1079 -
1080
1081 # Matches if this regular expression matches (a substring of) the SMTP MAIL FROM
1082 # address (not the message From-header). E.g. '^user@example\.org$'. (optional)
1083 SMTPMailFromRegexp:
1084
1085 # Matches if this regular expression matches (a substring of) the single address
1086 # in the message From header. (optional)
1087 MsgFromRegexp:
1088
1089 # Matches if this domain matches an SPF- and/or DKIM-verified (sub)domain.
1090 # (optional)
1091 VerifiedDomain:
1092
1093 # Matches if these header field/value regular expressions all match (substrings
1094 # of) the message headers. Header fields and valuees are converted to lower case
1095 # before matching. Whitespace is trimmed from the value before matching. A header
1096 # field can occur multiple times in a message, only one instance has to match. For
1097 # mailing lists, you could match on ^list-id$ with the value typically the mailing
1098 # list address in angled brackets with @ replaced with a dot, e.g.
1099 # <name\.lists\.example\.org>. (optional)
1100 HeadersRegexp:
1101 x:
1102
1103 # Influences spam filtering only, this option does not change whether a message
1104 # matches this ruleset. Can only be used together with SMTPMailFromRegexp and
1105 # VerifiedDomain. SMTPMailFromRegexp must be set to the address used to deliver
1106 # the forwarded message, e.g. '^user(|\+.*)@forward\.example$'. Changes to junk
1107 # analysis: 1. Messages are not rejected for failing a DMARC policy, because a
1108 # legitimate forwarded message without valid/intact/aligned DKIM signature would
1109 # be rejected because any verified SPF domain will be 'unaligned', of the
1110 # forwarding mail server. 2. The sending mail server IP address, and sending EHLO
1111 # and MAIL FROM domains and matching DKIM domain aren't used in future
1112 # reputation-based spam classifications (but other verified DKIM domains are)
1113 # because the forwarding server is not a useful spam signal for future messages.
1114 # (optional)
1115 IsForward: false
1116
1117 # Influences spam filtering only, this option does not change whether a message
1118 # matches this ruleset. If this domain matches an SPF- and/or DKIM-verified
1119 # (sub)domain, the message is accepted without further spam checks, such as a junk
1120 # filter or DMARC reject evaluation. DMARC rejects should not apply for mailing
1121 # lists that are not configured to rewrite the From-header of messages that don't
1122 # have a passing DKIM signature of the From-domain. Otherwise, by rejecting
1123 # messages, you may be automatically unsubscribed from the mailing list. The
1124 # assumption is that mailing lists do their own spam filtering/moderation.
1125 # (optional)
1126 ListAllowDomain:
1127
1128 # Influences spam filtering only, this option does not change whether a message
1129 # matches this ruleset. If a message is classified as spam, it isn't rejected
1130 # during the SMTP transaction (the normal behaviour), but accepted during the SMTP
1131 # transaction and delivered to the specified mailbox. The specified mailbox is not
1132 # automatically cleaned up like the account global Rejects mailbox, unless set to
1133 # that Rejects mailbox. (optional)
1134 AcceptRejectsToMailbox:
1135
1136 # Mailbox to deliver to if this ruleset matches.
1137 Mailbox:
1138
1139 # Free-form comments. (optional)
1140 Comment:
1141
1142 # If non-empty, incoming delivery attempts to this destination will be rejected
1143 # during SMTP RCPT TO with this error response line. Useful when a catchall
1144 # address is configured for the domain and messages to some addresses should be
1145 # rejected. The response line must start with an error code. Currently the
1146 # following error resonse codes are allowed: 421 (temporary local error), 550
1147 # (user not found). If the line consists of only an error code, an appropriate
1148 # error message is added. Rejecting messages with a 4xx code invites later retries
1149 # by the remote, while 5xx codes should prevent further delivery attempts.
1150 # (optional)
1151 SMTPError:
1152
1153 # If non-empty, an additional DMARC-like message authentication check is done for
1154 # incoming messages, validating the domain in the From-header of the message.
1155 # Messages without either an aligned SPF or aligned DKIM pass are rejected during
1156 # the SMTP DATA command with a permanent error code followed by the message in
1157 # this field. The domain in the message 'From' header is matched in relaxed or
1158 # strict mode according to the domain's DMARC policy if present, or relaxed mode
1159 # (organizational instead of exact domain match) otherwise. Useful for
1160 # autoresponders that don't want to accept messages they don't want to send an
1161 # automated reply to. (optional)
1162 MessageAuthRequiredSMTPError:
1163
1164 # Full name to use in message From header when composing messages coming from this
1165 # address with webmail. (optional)
1166 FullName:
1167
1168 # If configured, messages classified as weakly spam are rejected with instructions
1169 # to retry delivery, but this time with a signed token added to the subject.
1170 # During the next delivery attempt, the signed token will bypass the spam filter.
1171 # Messages with a clear spam signal, such as a known bad reputation, are
1172 # rejected/delayed without a signed token. (optional)
1173 SubjectPass:
1174
1175 # How long unique values are accepted after generating, e.g. 12h.
1176 Period: 0s
1177
1178 # Default maximum total message size in bytes for the account, overriding any
1179 # globally configured default maximum size if non-zero. A negative value can be
1180 # used to have no limit in case there is a limit by default. Attempting to add new
1181 # messages to an account beyond its maximum total size will result in an error.
1182 # Useful to prevent a single account from filling storage. (optional)
1183 QuotaMessageSize: 0
1184
1185 # Mail that looks like spam will be rejected, but a copy can be stored temporarily
1186 # in a mailbox, e.g. Rejects. If mail isn't coming in when you expect, you can
1187 # look there. The mail still isn't accepted, so the remote mail server may retry
1188 # (hopefully, if legitimate), or give up (hopefully, if indeed a spammer).
1189 # Messages are automatically removed from this mailbox, so do not set it to a
1190 # mailbox that has messages you want to keep. (optional)
1191 RejectsMailbox:
1192
1193 # Don't automatically delete mail in the RejectsMailbox listed above. This can be
1194 # useful, e.g. for future spam training. It can also cause storage to fill up.
1195 # (optional)
1196 KeepRejects: false
1197
1198 # Automatically set $Junk and $NotJunk flags based on mailbox messages are
1199 # delivered/moved/copied to. Email clients typically have too limited
1200 # functionality to conveniently set these flags, especially $NonJunk, but they can
1201 # all move messages to a different mailbox, so this helps them. (optional)
1202 AutomaticJunkFlags:
1203
1204 # If enabled, junk/nonjunk flags will be set automatically if they match some of
1205 # the regular expressions. When two of the three mailbox regular expressions are
1206 # set, the remaining one will match all unmatched messages. Messages are matched
1207 # in the order 'junk', 'neutral', 'not junk', and the search stops on the first
1208 # match. Mailboxes are lowercased before matching.
1209 Enabled: false
1210
1211 # Example: ^(junk|spam). (optional)
1212 JunkMailboxRegexp:
1213
1214 # Example: ^(inbox|neutral|postmaster|dmarc|tlsrpt|rejects), and you may wish to
1215 # add trash depending on how you use it, or leave this empty. (optional)
1216 NeutralMailboxRegexp:
1217
1218 # Example: .* or an empty string. (optional)
1219 NotJunkMailboxRegexp:
1220
1221 # Content-based filtering, using the junk-status of individual messages to rank
1222 # words in such messages as spam or ham. It is recommended you always set the
1223 # applicable (non)-junk status on messages, and that you do not empty your Trash
1224 # because those messages contain valuable ham/spam training information.
1225 # (optional)
1226 JunkFilter:
1227
1228 # Approximate spaminess score between 0 and 1 above which emails are rejected as
1229 # spam. Each delivery attempt adds a little noise to make it slightly harder for
1230 # spammers to identify words that strongly indicate non-spaminess and use it to
1231 # bypass the filter. E.g. 0.95.
1232 Threshold: 0.000000
1233 Params:
1234
1235 # Track ham/spam ranking for single words. (optional)
1236 Onegrams: false
1237
1238 # Track ham/spam ranking for each two consecutive words. (optional)
1239 Twograms: false
1240
1241 # Track ham/spam ranking for each three consecutive words. (optional)
1242 Threegrams: false
1243
1244 # Maximum power a word (combination) can have. If spaminess is 0.99, and max power
1245 # is 0.1, spaminess of the word will be set to 0.9. Similar for ham words.
1246 MaxPower: 0.000000
1247
1248 # Number of most spammy/hammy words to use for calculating probability. E.g. 10.
1249 TopWords: 0
1250
1251 # Ignore words that are this much away from 0.5 haminess/spaminess. E.g. 0.1,
1252 # causing word (combinations) of 0.4 to 0.6 to be ignored. (optional)
1253 IgnoreWords: 0.000000
1254
1255 # Occurrences in word database until a word is considered rare and its influence
1256 # in calculating probability reduced. E.g. 1 or 2. (optional)
1257 RareWords: 0
1258
1259 # Maximum number of outgoing messages for this account in a 24 hour window. This
1260 # limits the damage to recipients and the reputation of this mail server in case
1261 # of account compromise. Default 1000. (optional)
1262 MaxOutgoingMessagesPerDay: 0
1263
1264 # Maximum number of first-time recipients in outgoing messages for this account in
1265 # a 24 hour window. This limits the damage to recipients and the reputation of
1266 # this mail server in case of account compromise. Default 200. (optional)
1267 MaxFirstTimeRecipientsPerDay: 0
1268
1269 # Do not apply a delay to SMTP connections before accepting an incoming message
1270 # from a first-time sender. Can be useful for accounts that sends automated
1271 # responses and want instant replies. (optional)
1272 NoFirstTimeSenderDelay: false
1273
1274 # If set, this account cannot set a password of their own choice, but can only set
1275 # a new randomly generated password, preventing password reuse across services and
1276 # use of weak passwords. Custom account passwords can be set by the admin.
1277 # (optional)
1278 NoCustomPassword: false
1279
1280 # Routes for delivering outgoing messages through the queue. Each delivery attempt
1281 # evaluates these account routes, domain routes and finally global routes. The
1282 # transport of the first matching route is used in the delivery attempt. If no
1283 # routes match, which is the default with no configured routes, messages are
1284 # delivered directly from the queue. (optional)
1285 Routes:
1286 -
1287
1288 # Matches if the envelope from domain matches one of the configured domains, or if
1289 # the list is empty. If a domain starts with a dot, prefixes of the domain also
1290 # match. (optional)
1291 FromDomain:
1292 -
1293
1294 # Like FromDomain, but matching against the envelope to domain. (optional)
1295 ToDomain:
1296 -
1297
1298 # Matches if at least this many deliveries have already been attempted. This can
1299 # be used to attempt sending through a smarthost when direct delivery has failed
1300 # for several times. (optional)
1301 MinimumAttempts: 0
1302 Transport:
1303
1304 # Redirect all requests from domain (key) to domain (value). Always redirects to
1305 # HTTPS. For plain HTTP redirects, use a WebHandler with a WebRedirect. (optional)
1306 WebDomainRedirects:
1307 x:
1308
1309 # Handle webserver requests by serving static files, redirecting, reverse-proxying
1310 # HTTP(s) or passing the request to an internal service. The first matching
1311 # WebHandler will handle the request. Built-in system handlers, e.g. for ACME
1312 # validation, autoconfig and mta-sts always run first. Built-in handlers for
1313 # admin, account, webmail and webapi are evaluated after all handlers, including
1314 # webhandlers (allowing for overrides of internal services for some domains). If
1315 # no handler matches, the response status code is file not found (404). If
1316 # webserver features are missing, forward the requests to an application that
1317 # provides the needed functionality itself. (optional)
1318 WebHandlers:
1319 -
1320
1321 # Name to use in logging and metrics. (optional)
1322 LogName:
1323
1324 # Both Domain and PathRegexp must match for this WebHandler to match a request.
1325 # Exactly one of WebStatic, WebRedirect, WebForward, WebInternal must be set.
1326 Domain:
1327
1328 # Regular expression matched against request path, must always start with ^ to
1329 # ensure matching from the start of the path. The matching prefix can optionally
1330 # be stripped by WebForward. The regular expression does not have to end with $.
1331 PathRegexp:
1332
1333 # If set, plain HTTP requests are not automatically permanently redirected (308)
1334 # to HTTPS. If you don't have a HTTPS webserver configured, set this to true.
1335 # (optional)
1336 DontRedirectPlainHTTP: false
1337
1338 # Transparently compress responses (currently with gzip) if the client supports
1339 # it, the status is 200 OK, no Content-Encoding is set on the response yet and the
1340 # Content-Type of the response hints that the data is compressible (text/...,
1341 # specific application/... and .../...+json and .../...+xml). For static files
1342 # only, a cache with compressed files is kept. (optional)
1343 Compress: false
1344
1345 # Serve static files. (optional)
1346 WebStatic:
1347
1348 # Path to strip from the request URL before evaluating to a local path. If the
1349 # requested URL path does not start with this prefix and ContinueNotFound it is
1350 # considered non-matching and next WebHandlers are tried. If ContinueNotFound is
1351 # not set, a file not found (404) is returned in that case. (optional)
1352 StripPrefix:
1353
1354 # Directory to serve files from for this handler. Keep in mind that relative paths
1355 # are relative to the working directory of mox.
1356 Root:
1357
1358 # If set, and a directory is requested, and no index.html is present that can be
1359 # served, a file listing is returned. Results in 403 if ListFiles is not set. If a
1360 # directory is requested and the URL does not end with a slash, the response is a
1361 # redirect to the path with trailing slash. (optional)
1362 ListFiles: false
1363
1364 # If a requested URL does not exist, don't return a file not found (404) response,
1365 # but consider this handler non-matching and continue attempts to serve with later
1366 # WebHandlers, which may be a reverse proxy generating dynamic content, possibly
1367 # even writing a static file for a next request to serve statically. If
1368 # ContinueNotFound is set, HTTP requests other than GET and HEAD do not match.
1369 # This mechanism can be used to implement the equivalent of 'try_files' in other
1370 # webservers. (optional)
1371 ContinueNotFound: false
1372
1373 # Headers to add to the response. Useful for cache-control, content-type, etc. By
1374 # default, Content-Type headers are automatically added for recognized file types,
1375 # unless added explicitly through this setting. For directory listings, a
1376 # content-type header is skipped. (optional)
1377 ResponseHeaders:
1378 x:
1379
1380 # Redirect requests to configured URL. (optional)
1381 WebRedirect:
1382
1383 # Base URL to redirect to. The path must be empty and will be replaced, either by
1384 # the request URL path, or by OrigPathRegexp/ReplacePath. Scheme, host, port and
1385 # fragment stay intact, and query strings are combined. If empty, the response
1386 # redirects to a different path through OrigPathRegexp and ReplacePath, which must
1387 # then be set. Use a URL without scheme to redirect without changing the protocol,
1388 # e.g. //newdomain/. If a redirect would send a request to a URL with the same
1389 # scheme, host and path, the WebRedirect does not match so a next WebHandler can
1390 # be tried. This can be used to redirect all plain http traffic to https.
1391 # (optional)
1392 BaseURL:
1393
1394 # Regular expression for matching path. If set and path does not match, a 404 is
1395 # returned. The HTTP path used for matching always starts with a slash. (optional)
1396 OrigPathRegexp:
1397
1398 # Replacement path for destination URL based on OrigPathRegexp. Implemented with
1399 # Go's Regexp.ReplaceAllString: $1 is replaced with the text of the first
1400 # submatch, etc. If both OrigPathRegexp and ReplacePath are empty, BaseURL must be
1401 # set and all paths are redirected unaltered. (optional)
1402 ReplacePath:
1403
1404 # Status code to use in redirect, e.g. 307. By default, a permanent redirect (308)
1405 # is returned. (optional)
1406 StatusCode: 0
1407
1408 # Forward requests to another webserver, i.e. reverse proxy. (optional)
1409 WebForward:
1410
1411 # Strip the matching WebHandler path from the WebHandler before forwarding the
1412 # request. (optional)
1413 StripPath: false
1414
1415 # URL to forward HTTP requests to, e.g. http://127.0.0.1:8123/base. If StripPath
1416 # is false the full request path is added to the URL. Host headers are sent
1417 # unmodified. New X-Forwarded-{For,Host,Proto} headers are set. Any query string
1418 # in the URL is ignored. Requests are made using Go's net/http.DefaultTransport
1419 # that takes environment variables HTTP_PROXY and HTTPS_PROXY into account.
1420 # Websocket connections are forwarded and data is copied between client and
1421 # backend without looking at the framing. The websocket 'version' and
1422 # 'key'/'accept' headers are verified during the handshake, but other websocket
1423 # headers, including 'origin', 'protocol' and 'extensions' headers, are not
1424 # inspected and the backend is responsible for verifying/interpreting them.
1425 URL:
1426
1427 # Headers to add to the response. Useful for adding security- and cache-related
1428 # headers. (optional)
1429 ResponseHeaders:
1430 x:
1431
1432 # Pass request to internal service, like webmail, webapi, etc. (optional)
1433 WebInternal:
1434
1435 # Path to use as root of internal service, e.g. /webmail/.
1436 BasePath:
1437
1438 # Name of the service, values: admin, account, webmail, webapi.
1439 Service:
1440
1441 # Routes for delivering outgoing messages through the queue. Each delivery attempt
1442 # evaluates account routes, domain routes and finally these global routes. The
1443 # transport of the first matching route is used in the delivery attempt. If no
1444 # routes match, which is the default with no configured routes, messages are
1445 # delivered directly from the queue. (optional)
1446 Routes:
1447 -
1448
1449 # Matches if the envelope from domain matches one of the configured domains, or if
1450 # the list is empty. If a domain starts with a dot, prefixes of the domain also
1451 # match. (optional)
1452 FromDomain:
1453 -
1454
1455 # Like FromDomain, but matching against the envelope to domain. (optional)
1456 ToDomain:
1457 -
1458
1459 # Matches if at least this many deliveries have already been attempted. This can
1460 # be used to attempt sending through a smarthost when direct delivery has failed
1461 # for several times. (optional)
1462 MinimumAttempts: 0
1463 Transport:
1464
1465 # DNS blocklists to periodically check with if IPs we send from are present,
1466 # without using them for checking incoming deliveries.. Also see DNSBLs in SMTP
1467 # listeners in mox.conf, which specifies DNSBLs to use both for incoming
1468 # deliveries and for checking our IPs against. Example DNSBLs: sbl.spamhaus.org,
1469 # bl.spamcop.net. (optional)
1470 MonitorDNSBLs:
1471 -
1472
1473# Examples
1474
1475Mox includes configuration files to illustrate common setups. You can see these
1476examples with "mox config example", and print a specific example with "mox
1477config example <name>". Below are all examples included in mox.
1478
1479# Example webhandlers
1480
1481 # Snippet of domains.conf to configure WebDomainRedirects and WebHandlers.
1482
1483 # Redirect all requests for mox.example to https://www.mox.example.
1484 WebDomainRedirects:
1485 mox.example: www.mox.example
1486
1487 # Each request is matched against these handlers until one matches and serves it.
1488 WebHandlers:
1489 -
1490 # Redirect all plain http requests to https, leaving path, query strings, etc
1491 # intact. When the request is already to https, the destination URL would have the
1492 # same scheme, host and path, causing this redirect handler to not match the
1493 # request (and not cause a redirect loop) and the webserver to serve the request
1494 # with a later handler.
1495 LogName: redirhttps
1496 Domain: www.mox.example
1497 PathRegexp: ^/
1498 # Could leave DontRedirectPlainHTTP at false if it wasn't for this being an
1499 # example for doing this redirect.
1500 DontRedirectPlainHTTP: true
1501 WebRedirect:
1502 BaseURL: https://www.mox.example
1503 -
1504 # The name of the handler, used in logging and metrics.
1505 LogName: staticmjl
1506 # With ACME configured, each configured domain will automatically get a TLS
1507 # certificate on first request.
1508 Domain: www.mox.example
1509 PathRegexp: ^/who/mjl/
1510 WebStatic:
1511 StripPrefix: /who/mjl
1512 # Requested path /who/mjl/inferno/ resolves to local web/mjl/inferno.
1513 # If a directory contains an index.html, it is served when a directory is requested.
1514 Root: web/mjl
1515 # With ListFiles true, if a directory does not contain an index.html, the contents are listed.
1516 ListFiles: true
1517 ResponseHeaders:
1518 X-Mox: hi
1519 -
1520 LogName: redir
1521 Domain: www.mox.example
1522 PathRegexp: ^/redir/a/b/c
1523 # Don't redirect from plain HTTP to HTTPS.
1524 DontRedirectPlainHTTP: true
1525 WebRedirect:
1526 # Just change the domain and add query string set fragment. No change to scheme.
1527 # Path will start with /redir/a/b/c (and whathever came after) because no
1528 # OrigPathRegexp+ReplacePath is set.
1529 BaseURL: //moxest.example?q=1#frag
1530 # Default redirection is 308 - Permanent Redirect.
1531 StatusCode: 307
1532 -
1533 LogName: oldnew
1534 Domain: www.mox.example
1535 PathRegexp: ^/old/
1536 WebRedirect:
1537 # Replace path, leaving rest of URL intact.
1538 OrigPathRegexp: ^/old/(.*)
1539 ReplacePath: /new/$1
1540 -
1541 LogName: app
1542 Domain: www.mox.example
1543 PathRegexp: ^/app/
1544 WebForward:
1545 # Strip the path matched by PathRegexp before forwarding the request. So original
1546 # request /app/api become just /api.
1547 StripPath: true
1548 # URL of backend, where requests are forwarded to. The path in the URL is kept,
1549 # so for incoming request URL /app/api, the outgoing request URL has path /app-v2/api.
1550 # Requests are made with Go's net/http DefaultTransporter, including using
1551 # HTTP_PROXY and HTTPS_PROXY environment variables.
1552 URL: http://127.0.0.1:8900/app-v2/
1553 # Add headers to response.
1554 ResponseHeaders:
1555 X-Frame-Options: deny
1556 X-Content-Type-Options: nosniff
1557
1558# Example transport
1559
1560 # Snippet for mox.conf, defining a transport called Example that connects on the
1561 # SMTP submission with TLS port 465 ("submissions"), authenticating with
1562 # SCRAM-SHA-256-PLUS (other providers may not support SCRAM-SHA-256-PLUS, but they
1563 # typically do support the older CRAM-MD5).:
1564
1565 # Transport are mechanisms for delivering messages. Transports can be referenced
1566 # from Routes in accounts, domains and the global configuration. There is always
1567 # an implicit/fallback delivery transport doing direct delivery with SMTP from the
1568 # outgoing message queue. Transports are typically only configured when using
1569 # smarthosts, i.e. when delivering through another SMTP server. Zero or one
1570 # transport methods must be set in a transport, never multiple. When using an
1571 # external party to send email for a domain, keep in mind you may have to add
1572 # their IP address to your domain's SPF record, and possibly additional DKIM
1573 # records. (optional)
1574 Transports:
1575 Example:
1576 # Submission SMTP over a TLS connection to submit email to a remote queue.
1577 # (optional)
1578 Submissions:
1579 # Host name to connect to and for verifying its TLS certificate.
1580 Host: smtp.example.com
1581
1582 # If set, authentication credentials for the remote server. (optional)
1583 Auth:
1584 Username: user@example.com
1585 Password: test1234
1586 Mechanisms:
1587 # Allowed authentication mechanisms. Defaults to SCRAM-SHA-256-PLUS,
1588 # SCRAM-SHA-256, SCRAM-SHA-1-PLUS, SCRAM-SHA-1, CRAM-MD5. Not included by default:
1589 # PLAIN. Specify the strongest mechanism known to be implemented by the server to
1590 # prevent mechanism downgrade attacks. (optional)
1591
1592 - SCRAM-SHA-256-PLUS
1593
1594
1595 # Snippet for domains.conf, specifying a route that sends through the transport:
1596
1597 # Routes for delivering outgoing messages through the queue. Each delivery attempt
1598 # evaluates account routes, domain routes and finally these global routes. The
1599 # transport of the first matching route is used in the delivery attempt. If no
1600 # routes match, which is the default with no configured routes, messages are
1601 # delivered directly from the queue. (optional)
1602 Routes:
1603 -
1604 Transport: Example
1605*/
1606package config
1607
1608// NOTE: DO NOT EDIT, this file is generated by ../gendoc.sh.
1609