Need help googling for a free Linux mail server with multiple-domains and forwarding

[fury]

I'm not sure if I'm just searching for the wrong terms or if there's just not much stuff out there.

I've picked up a few sites on my servers that had a decent, flexible mail setup at their old location (with cPanel). The mail setup I have now is sendmail (or is it Postfix disguising itself? I always forget) and qpopper. The combo doesn't seem to have the stuff I need. The mail server that cPanel provides would be nice to have in a stand-alone fashion, even if I don't have the cPanel to manage it, I could just edit the configuration file myself when somebody needed it (It wasn't updated all that often by the site owner, it was usually me). But I'm pretty sure they don't provide that as a standalone download.

I don't necessarily need something that's as foolproof as a toaster like cPanel's mail server though. I just need something with multiple-domain control (i.e. on the same server, a mail sent to fury@mydomain.com would be different than a mail sent to fury@myotherdomain.com), and then a way to forward unaddressed emails per domain to specific mailboxes (i.e. disposable mail boxes, like signing up at some site with alskdfjaklfgdjasklfj@mydomain.com), or a way to just automatically discard unaddressed emails depending on the domain (in case they don't need disposable mail boxes).

Can anyone direct me to the proper google search, or even better, to the mail server package that's right for me?

[StickyLoad]

http://www.google.com/search?hl=en&s...ns&btnG=Search

[hawk82]

www.qmailtoaster.com
I am not sure if it is compatible with cpanel, as it requires a few items removed for compatibility issues in order to install qmailtoaster.

I use it on a CentOS 4 server and does what I need it to. QMailToaser has a web administration page. You can also add/delete users/domains right from the commandline too.