Lets see if I can explain this well.
We currently have a piece of software that sends out mail. This piece of
software is located on machines all around the US. These machines are used
by our clients, who can send out mail on behalf of a user; [EMAIL PROTECTED]
They connect to our exchange (BLAH) server, which is an open relay (yes, I
explained why NOT to do this years ago) so that the machines out on the net
CAN relay [EMAIL PROTECTED] They also never bothered to add security to those
machines. The problem is, we need to lock down our open relay (people found
us and are using us for relaying, thus getting us blocked... big surprise..)
AND allow these machines to relay selectively without modifying the machines
themselves. There are WAY to many (and variable) ips to manually add the ips
of each machine.
I am hoping to set up a Qmail (my favorite) smtp gateway (our mail is
already routing out one, exchange's sucks) that can somehow allow relaying
based on "FROM" (Aka from [EMAIL PROTECTED]) or allow the relay based on a
keyword in the message. Or perhaps someone has a better idea?
Many many thanks!
-Elliott
