Hi all
Just to clarify some points
They are running an IMAP server with SASL login for remote users
IMAP let's you get mail from your account. So it's really not related to
your problem.
You'd have to use SMTP authentication so when one wants to send mail
from u...@example.com to anotheru...@example.com or u...@example.com,
one has to use IP inside my_networks or has to authenticate using SASL
authentication with SMTP session. So this will certainly stop spam from
u...@example.com to u...@example.com, but please read whole thread - you
should be aware of possible risks.
Pawel Lesniak
