Introduction to Antispam Practices
There’s a good overview of antispam practices at Howto Forge today, detailing the various methods either currently in use (black/gray/white lists, applications, etc), and proposed (DKIM, etc).
In a world where spam is bound to hold such an important position,
methods of preventing it should also be given an increasing importance.
Some of the easiest and most widely used prevention methods are host
control solutions, Antispam applications and user education.
I’m particularly excited about Domain Keys Identified Mail (DKIM), which I wrote about recently. Such a method would be very useful in tracking down spammers and controlling the flood of junk they put out, though, as this article points out, it’s not without it’s limitations. “The main disadvantage of DKIM is that email messages can be significantly modified in certain situations (e.g. when being forwarded by list severs), causing the signature to be invalidated and the message to be rejected. A solution to this issue would be combining DomainKeys with SPF, because SPF is immune to modifications of the email data.”
Check the article out - it’s a good overview of what’s currently going on, and perhaps may inspire you to try a different approach to your current antispam efforts.
