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Rulesets that expand on sendmail's anti-spam facilities

'SpamFilters' is a collection of rulesets that expand on sendmail's anti-spam facilities. These rulesets inspect the "To", "From", "Reply-To", "Received", "Subject", and SpamAssassin's "X-Spam-Status" email headers, and reject email based on their contents. It integrates into sendmail by way of the sendmail m4 build hierarchy, but can be added directly to sendmail's configuration file if needed.


User README included; User guide available in HTML format from

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Verified by

Verified on


Verified by

Janet Casey

Verified on

28 January 2004

Leaders and contributors

D. J. Hawkey Jr. Maintainer

Resources and communication

AudienceResource typeURI
Bug Tracking,Developer,

Software prerequisites

Required to usesendmail 8.10 or later with database and regex support

This entry (in part or in whole) was last reviewed on 14 January 2017.


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