9 f.Add("V = DMARC1; P = reject ;\tSP=none; unknown \t=\t ignored-future-value \t ; adkim=s; aspf=s; rua=mailto:dmarc-feedback@example.com ,\t\tmailto:tld-test@thirdparty.example.net!10m; RUF=mailto:auth-reports@example.com ,\t\tmailto:tld-test@thirdparty.example.net!0G; RI = 123; FO = 0:1:d:s ; RF= afrf : other; Pct = 0")