I've dmarc configured to send out reports to those domains, that have dmarc configuration too.
A lot of those are misconfigured in one way or another. Mostly the mailaddress stated in DNS is not accepting my mails or is not existent at all. But some have got their mailserver misconfigured in a way that the MAILER-DAEMON sends mail from a non existent domain as you can see in this log: In: EHLO mail1.tk.de Out: 250-mail2.proris.com . . . In: MAIL FROM:< <mailto:mailer-dae...@esa2.tk.de> mailer-dae...@esa2.tk.de> SIZE=1823 Out: 250 2.1.0 Ok In: RCPT TO:< <mailto:dm...@proris.com> dm...@proris.com> Out: 450 4.1.8 < <mailto:mailer-dae...@esa2.tk.de> mailer-dae...@esa2.tk.de>: Sender address rejected: Domain not found In: RSET Out: 250 2.0.0 Ok In: QUIT Out: 221 2.0.0 Bye Now I would like to whitelist such domains within postfix so it does accept these mails. I tried by creating a file /etc/postfix/whitelist_unknown_domain with: mailer-dae...@esa2.tk.de OK Then added it to smtpd_sender_restrictions: smtpd_sender_restrictions = pcre:/etc/postfix/blacklist_domains_pcre, hash:/etc/postfix/whitelist_unknown_domain But the mails are still not accepted. What am I missing? Thanks Norbert
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