September 26, 2002
Controlling Spam

Spam is junk e-mail that you don't want, didn't ask for and can't get rid of. Current estimates are that spam constitutes over one-third of the email that passes through the Internet every day.

On October 1st, a new spam detection system will be implemented at ISU for email sent to an 'iastate.edu' address. This includes all mail received by Extension staff.

Currently ISU Extension staff receive very little spam. However, spam is a growing issue and a spam detection system can help you control your email so that important messages aren't missed.

Spam detection is more art than science. It works by comparing the header and contents of an incoming email message to a set of rules to detect messages that might be spam. In addition, it ranks messages by the number of matches it gets. The more rules matched in an email message, the higher the probability the message is spam. If an email message contains enough characteristics to be flagged the message subject is modified so that it includes:

[SPAM? #]

The number of ## characters indicates how many of the 'rules' apply to that particular message. If [SPAM? #####] appears in the header then it is extremely likely that the message is spam. If [SPAM? #] appears in a header, it's still likely that it's spam, but you may want to check the message to be sure.

If a message sent to you does not have [SPAM? #] in the header, this means that it didn't trigger enough spam 'rules' to be flagged.

More information about how spam detection is being implemented at ISU can be found at:

Spam Detection Being Implemented

on the AIT (Academic Information Technologies) website.

Posted by dcoates at September 26, 2002 09:24 AM