Need a free or Cheap anti spam filter

[max8699]

Hi All,
I need a solution for stopping(slowing down at least) Spam from getting through at one of our clients sites. I would like to stop it at the server level, due to ease of maintenance, as we look after it remotely most of the time and we would like it free or very Cheap if possible. At the moment we installed GFI mail essentials trial ver which seemed to work ok but the full licenced ver is beyond there budget. They have exchange 2003 and all client pc are XP pro.
I read a few places about MS IMF any good for what we need?

Many thanks in advance
Regards
Max

 

[58sniper]

IMF with
Recipient Filtering
Sender Filtering
Connection Filtering
Tarpitting

Pat Richard, MCSE MCSA:Messaging CNA
Microsoft Exchange MVP
Want to know how email works? Read for yourself -

http://www.ietf.org/rfc/rfc2821.txt

 

[LisaWo]

You might check into Alligate. It is an in house solution. It's one fee per domain.

 

[58sniper]

Keep in mind that if you have Exchange w/ SP2, you already have the IMF. You just have to enable & configure it. And, it's fully supported, and updated every two weeks.

Pat Richard, MCSE MCSA:Messaging CNA
Microsoft Exchange MVP
Want to know how email works? Read for yourself -

http://www.ietf.org/rfc/rfc2821.txt

 

[CRAIG2432]

58sniper recomended this for myself. It took a little getting use to but works realy realy well and like he says, its free (if you have exchange and its supported)
Well recomended.

 

[max8699]

Yep set up and used IMF for the last couple of months works well. catching about 40 to 50 spams a day. so far only three real e-mails have been caught.

Regards
Max