We're using MailScanner as our mail gateway and found it excellent. Our
setup is FreeBSD 5.3 + sendmail + SpamAssassin + ClamAV + BitDefender +
F-prot. MailScanner can also work with Linux and Postfix/Exim too. The
link is http://www.sng.ecs.soton.ac.uk/mailscanner/
Another one, purely for gateway (also based on MailScanner), is
SMGateway from http://www.fsl.com/products/fsmg.html The package only
work on RedHat Ent or CentOS but added many features.
Both are free to use. You can pay SMGateway for support.
Chris Bagnall wrote:
>> The author is implying something be developed with m0n0
>>simplicity and reliability for the task of spam filtering. I
>>personally think it is an excellent idea since spam filtering
>>is a nightmare to set up.
>You might want to look at ART's Project Gamera:
>I've not used it personally, but I have used quite a few of his packages on
>webservers running the Plesk control panel, and they've enhanced
>FWIW, if you are looking for a mail filtering system, you can't go too far
>wrong with Postfix + SpamAssassin + ClamAV.