Thank you all so much for all your help! I don't think I'm up for setting up a separate postfix instance for outgoing email. It's pretty obvious I'm a novice working with Postfix. Actually not really sure if removing the Received headers was accomplishing anything anyway. Google doesn't give you much to work with on their spam filtering. It was a stab in the dark. It's also probable that being an Akamai IP, there's someone doing something on my C block that triggers Google to have a poor reputation for the whole block and that might be the issue. I like having my own server and managing the install from the operating system up, so maybe I just have to live with some spam filtering of our outgoing email.
> On May 10, 2025, at 2:29 PM, Wietse Venema via Postfix-users > <postfix-users@postfix.org> wrote: > > Matus UHLAR - fantomas via Postfix-users: >> On 10.05.25 13:32, Ken Biggs via Postfix-users wrote: >>> So continuing the saga ... digging into /etc/postfix/header_checks I found >>> a revision I made back in January to try to keep our outgoing email from >>> having headers with the IP address of the email client that sent the email >>> to the server and maybe keep Gmail from marking our outgoing email as >>> SPAM. >> >>> /^Received:.*with ESMTPSA/ IGNORE >>> /^X-Originating-IP:/ IGNORE >>> /^X-Mailer:/ IGNORE >>> /^Mime-Version:/ IGNORE >> >> These should not be used globally but only at submission level. >> >> This can be achieved by using separate postfix instance for submitted mail >> - I don't see possibility of configuring separate cleanup instance for smtpd > > master.cf: > > submission inet n - n - - smtpd > -o syslog_name=postfix/submission > -o cleanup_service=submission_cleanup > ... > > submissions inet n - n - - smtpd > -o syslog_name=postfix/submissions > -o cleanup_service=submission_cleanup > ... > > submission_cleanup unix n - n - 0 cleanup > -o header_checks=submission_header_checks > -o mime_header_checks=submission_mime_header_checks > > But I'll be the first to admit that this is not 'easy to use'. > > Wietse > _______________________________________________ > Postfix-users mailing list -- postfix-users@postfix.org > To unsubscribe send an email to postfix-users-le...@postfix.org _______________________________________________ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
