And Smtp header checks get applied to (smtp) mail received by submission on
its way out to the world.
NO. "smtp_header_checks" are applied on output to all mail that leaves
the system, regardless of how it arrived, whether inbound from a remote
source, an SMTP submission, or generated locally.
Yes, this is what I meant, sorry I didn't word it better or acknowledge
there's more than one way to get an email "in" other than submission. "leaves
the system" is what i meant when saying "on its way out to the world".
main.cf
smtp_header_checks = pcre:/etc/postfix/smtp_header_checks
/etc/postfix/smtp_header_checks:
/^Received:/ IGNORE
If the intent is to only censor submission, This is not correct, it will
drop all "Received" headers from any mail that is not delivered locally,
so entirely unsuitable for relaying non-submission mail, risks mail
loops (the Received hop count is no longer effective), ...
I see, I did not consider being a rely. I was coming from a place of my
server only sends my email, and isn't a relay for other purposes.
What would be the appropriate way to strip submission source IP's in case one
were to add relaying?
Or is waiting for the new `smtpd_hide_session_info` the only answer?
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