This page lists some filters that can be used with Weasel. Most of the filters are "production" filters that you can install and use to do real work. Where source code is included, you can also use the filters as demonstrations of how to write your own filter.

The listing of a package on this page does not imply that it is automatically available to all registered users of Weasel. Most of it is freeware, but I might also list some shareware. The conditions of use of each package remain, as always, with the original supplier of the software.

There are some filters on os2site that are not listed on this page, because I haven't checked them, but are probably also OK to use.

AddHeaders

AutoReply

BanURLs

BogoFilter

BlockMyIP

A stage 1 filter to reject mail that pretends to come from your own address. Legitimate mail should not come from your own address, except in unusual cases such as when you are running two servers.

CopyMail

A filter to take a copy of each incoming message and store it in an "archive" directory.

DFilter

Dynamic filter that checks for spam.

FromBadUser

A stage 2 filter that rejects MAIL FROM addresses of the form baduser@yourdomain, where yourdomain is one of your own domains and baduser is not a valid username in that domain. That helps block the spammers who are pretending to be sending from one of your domains.

MSvirus

Emergency fix for a mailbombing problem. Possibly obsolete by now.

MultiFilter

A filter to call a sequence of other filters. You can use this if you have several filters you want to run.

phpFilter

I don't understand much about PHP myself, but I gather that this is a multipurpose filter that adds multidomain support, mailbox limits, and management via the web.

PMMFix

Alters some header lines of the mail, to compensate for cases that PMMail 1.96a does not handle properly.

PostmasterCheck

You need this filter if you have enabled "mark failures as suspect" in the Options 2 page of Weasel Setup. If you install it as a stage 4 filter, it will copy the suspect mail to a "suspect" subdirectory, where you can inspect it to see whether this is legitimate mail.

SampleFilter

An illustration of how to write a Weasel filter.

SFbin

A multistage spam filter that is called at several stages of Weasel processing.

SpamAssassin

A spam filter that includes learning.

Tester

This is not a filter. Instead, it is a script that you can use for testing when you write your own filters.

TNItools

Junk mail filter (WeaselFilter)

A program that checks the header lines in incoming mail, and rejects mail according to rules that you can set up.

Virus filter

Does a virus scan by invoking Norman Virus.

Virus scan

A description of how to create a Weasel filter that will invoke Norman antivirus to do virus checking on incoming mail. I gather that John has now developed a more sophisticated version, so I'll update this entry once I've found the details.