Hi, On Wed, May 05, 2010 at 03:38:01PM +0300, Alans wrote: ... > We are about to close port 25 and tell customers to switch to our smtp relay > and scan it with spamassasin (I still don't know if possible or no!).
As Bernd Petrovitsch already told you: Yes, that's possible. To close port 25 is a good idea. Use 587 with smtp-auth instead. > We want to reject all spam emails and send notification back to sender about > his/her activity. That part of the job is for your MTA, not for spamassassin. -- Regards Frank