I currently operate a mailserver that receives all incoming mail that is
supposed to do filtering prior to forwarding the mail on to other mail
server resources. A while ago, and using sendmail, I had a mailertable
entry that would redirect all mail for the domain to an Exchange server for
corporate delivery. Then the mail domain name changed so now I have a bunch
of entries in the aliases file to map older user names to the new user name
and domain name (so that mailertable entry is now gone).
I still need to do some front end SPAM filtering but am finding that
procmail will not get invoked if the mail is not delivered locally (I now
have a mailertable entry like so: 'mydomain.com procmail:/etc/procmailrc'
that gets procmail to do the filtering for all local deliveries).
As I have been searching for a solution that would allow a filter to be
activated prior to being queued and aliases resolved, I was wondering if it
would be possible to use a similar mailertable entry and a script that would
do the required filtering, then do the alias resolving and redirecting?? A
question that comes to mind... is it possible to obtain the username that
the email was being delivered to as a variable in the procmail script that
is being called (/etc/procmailrc in the above example)?
Does this sound like a possibility? Or is there a better way? Does anyone
know of a better MTA that will allow this?
Thanks for your time,
-Craig
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