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Note: Information contained in archived ITSS newsletter articles was current at the time of publication, but may not reflect the present state of technology or ITSS.

May 2003

Next Steps to Reduce Spam

ITSS intends to begin using a new tool for spam reduction on Friday morning, May 9. We will use the Spamhaus Block List from The Spamhaus Project. The Spamhaus Block List, or SBL, is a free database of verified spammers, spam gangs, and spam services. We intend to block incoming email from all addresses on the SBL.

The Office of Information Technology at the Twin Cities Campus has been using this service for some time now, and they report few problems with legitimate mail being blocked this way. We have been using this list as part of our SpamAssassin filtering. By applying the SBL list as a block prior to SpamAssassin, the amount of email that must be processed by SpamAssassin will be greatly reduced. Email blocked in this new way will be discarded and will not be stored.

Any email blocked by SBL will generate an email back to the sender. In the unlikely instance that a legitimate email message is blocked, the sender will know this and can ask for assistance.

If you have concerns or questions about this, please contact Scott Hollatz ( or ext. 8851). Please do let Scott know if you become aware of any legitimate email that is blocked in this way.

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Last modified on 05/07/03
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