I'm about to upgrade my Debian system to Bookworm, and thus to postfix 3.7.
That will allow me to use "local_login_sender_maps". I have a few
stupid questions about that:
* What is the precise syntax of the right-hand-side patterns? Does
".example.com" match subdomains of example.com as it does in an access
table?
* Is it reasonable to assume that a normal user has no valid reason for
ever using a sender address that is not his own and does not belong to
his domain? So for a user with two Unix usernames and two separate
domains, I could configure it as:
/^(root|postfix)$/ *
/^(jd|jdmobile)$/ $1 $1...@mailserver.example.org
@mydomain1.example.com @mydomain2.example.com
?
* Is it reasonable to assume that a normal user has no valid reason for
ever using the sender address "<>"?
* is it correctly understood that with "local_login_sender_maps" in use,
"authorized_submit_users" becomes redundant?
* I wonder why "local_login_sender_maps" and "smtpd_sender_login_maps"
work in opposite directions: they basically contain equivalent (or even
equal) information, but "local_login_sender_maps" looks up a username
to find allowed addresses, while "smtpd_sender_login_maps" looks up an
address to find users that may use that address. I have no doubt that
there is a good reason, but it escapes me for the moment - and I am curious.
Thanks,
Jesper
--
Jesper Dybdal
https://www.dybdal.dk
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