Hello List,
I have a problem with check_sender_access that I can't find a solution
to.
My setup actually works very well with the exception of bounce handling.
More on that later, first to describe my setup:
2 postfix mail server, one, mail-server1, is connected to the internet,
the second,
calling it list-server1, which serves a few mailing lists, is only
reachable thru
mail-server1.
On mail-server1 a transport map entry sends everything for @list-dom.de
to list-server1,
list-server1 does his work and sends all back to mail-server1 which then
delivers to
the final destination.
On list-server1, to prevent the whole world sending mails, I have
installed a
check_sender_access map to accept a few allowed domains, reject
everything else.
---- 8< ----
smtpd_sender_restrictions = check_sender_access
regexp:/etc/postfix/config/access_sender,
reject
---- 8< ----
access_sender file:
---- 8< ----
/^([a-z0-9_=\.-]+)@dom1.de/ OK
/^([a-z0-9_=\.-]+)@dom2.de/ OK
/^([a-z0-9_=\.-]+)@dom3.de/ OK
---- 8< ----
All fine so far, but...
... bounces, as the are send with empty FROM (<>), as I understand to
prevent loops,
get rejected to. This is a problem because nobody will ever notice if
there are dead
emails in a list. Also, automatic bounce handling (I am using mailman3
on list-server1)
will never do anything.
---- 8< ----
<test-boun...@list-dom.de>: host 10.245.16.24[10.245.16.24] said: 554
5.7.1 <>:
Sender address rejected: Access denied (in reply to MAIL FROM
command)
---- 8< ----
with 10.245.16.24 being list-server1
After all googleing and manual reading I have done, I can't find a
solution and hope someone
can point me into the right direction.
Thanks in advance,
Daniel
--
Anything that is unrelated to elephants is irrelephant.
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