Back to Computing Page
How to use the Spam Filter for e-mail

Incoming Physiology e-mail is now being scanned by a spam filter program (named Ninja). This filter is successful in catching about 95% of all spam (or junk email), so even in the worst case you should be getting very few spam messages in your Inbox.

The spam filter examines the content of each new message, and gives it a spam "score". A score of 200 or above qualifies a message as spam, and that message is moved into a special mailbox named "Spam/Quarantine".

The spam filter is very accurate, and it is very rare for it to get a "false positive" i.e. moving a good message into the Quarantine folder. As such, you normally don't need to monitor the Spam/Quarantine folder. Mail that collects in the Quarantine folder is automatically deleted after 5 days.

You can view the Quarantine folder in a couple of ways:

Due to the great accuracy of the spam filter, you don't need to monitor the Quarantine folder frequently.

Please note that in either case the spam filter does not automatically delete any message for 5 days (though this may change at some future date).

If you receive the same (or similar) spam email repeatedly, and it is missed by the spam filter, forward a copy to Ravi. If you use Webmail you can drag the offending email into the "Spam Blacklist" folder for future blocking.

The server spam filter also marks most (but not all) virus infected emails as "Spam".

Some email clients, such as Eudora and Outlook, have additional Junk filters built in. These are not as accurate as the Ninja spam filter, and my recommendation is to disable these local junk filters. If you do decide to use them, then please monitor the contents of these junk filters carefully for any false positives.

The spam filter should result in about a 95% reduction in spam mail.

If you have any comments or questions please send them by e-mail to
Return to Computing Page
Back to The Basement
This page last modified on : Nov. 24, 2006