burngreave.net

Implemented Spam and Virus scanning on the burngreave.net mail hub.

It uses http://www.spamassassin.org to filter for spam sitewide by passing all the mail through http://www.mailscanner.info and using f-prot's AV engine for Linux

Both these tools are open source and give us better anti spam than many other propriety solutions and can just be used without having to purchase a high cost commercial solution.

The SpamAssassin marks email it believes to be SPAM with the prefix {Spam ?} to the subject, making it easy to set up filter rules on your inbox.

Mail that gets through the spam filter but is still unwanted spam can be redirected to a folder called spam-bin. Simply click on the "report as spam" link on the top imp menu. SpamAssassin will analyze this and generate new rules to try and catch future spam.