It's definitely Alligate for this purpose.
Instead of using something like Postfix or IMgate which will mostly
replicate functionality found in Declude, Alligate will end up blocking
things using unique functionality and it runs on Windows and uses very
little CPU.
The two main features of Alligate as a pre-scanning gateway are the
selective greylisting functionality, where it will greylist senders only
if they appear that they might be zombies (since greylisting is really
only effective against zombie spam), and the other is the internal
MXRate blacklist.
I rarely block messages with permanent errors with Alligate, but by
greylisting effectively, you can avoid having 95% of your E-mail traffic
hit your second layer of scanning. It also does so selectively so that
your legitimate E-mail will rarely hit it and cause any issues.
Matt
Bonno Bloksma wrote:
Hi,
With the amount of spam I have to throw away each day no reaching
consistant levels of over 90%... I can of course get an even faster
mailserver but I think I would be better of with an extra smtp server
in front of my mailserver which filters the most blatant spam mail
purly based on session info. What passes that server can go on to my
IMail server and have more contect based filtering using Declude,
Sniffer, InvURIBL etc.
What would be a good first step server? I have experience with
(Debian) Linux so a Linux based solution is no problem.
Met vriendelijke groet,
Bonno Bloksma
senior systeembeheerder
*tio *
hogeschool hospitality en toerisme
begijnenhof 8-12 / 5611 el eindhoven
t 040 296 28 28 / f 040 237 35 20
b.blok...@tio.nl <mailto:b.blok...@tio.nl> / www.tio.nl
<http://www.tio.nl>
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