I am administering an Exchange 2000 email server behind a Raptor firewall. We are getting spammed to high heaven.

I am using ScanMail for Exchange 2000 and eManager Content filters.

However, it appears that I am losing the war against spam. I am to the point of recommending changing our primary domain (now kicking myself that I implimented Active Directory on that domain name).

The eManager has been somewhat of a troublesome product. Particularly, a lot of spam that comes in nowadays is just a 'stub' HTML that pulls the text from web sources, so won't filter.

Another problem is that I have to be wary of how the rules are written, as they can cause trouble and eManager only tells you what rule blocked the mail (there are hundreds of text strings per rule).

Whats worse, since implimenting ScanMail eManager, we are geting spam from more sources. The eManager is using a lot of hardware resources (memory and processor time).

I am looking for a filter service that proxies email externally scanning it for viruses and content. Any help?