On 17.11.22 12:56, Bryan K. Walton wrote:
I would like to enforce a match between the "From" address and a sasl
authenticated username, but I would like to only enforce this for a
single sasl username.
In my postfix main.cf, I have the following:
smtpd_sender_restrictions =
<other restrictions>
reject_authenticated_sender_login_mismatch,
<other restrictions>
smtpd_sender_login_maps =
hash:/etc/postfix/restricted_senders
In /etc/postfix/restricted_sender, I have the following:
j...@doe.com jdoe
this restricts using addresses j...@doe.com by other users, it doesn't
prevent user jdoe from using other addresses.
This works, for this user. However, it breaks sending for all of my
other sasl authenticated users, unless I also put their info into
/etc/postfix/restricted_sender
see archive where Wietse explained how do these work:
https://marc.info/?l=postfix-users&m=165263335106167&w=2
Is there a way to make this restriction *only* apply to the username
present in that file?
I believe Victor explained the rest.
Also I believe that for rejecting header From: you'd need to use external
milter.
I know of no milters supporting this feature now.
however with help of https://www.mailmunge.org/ it should be easy to write
that in perl.
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