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'SQLgrey' is a Postfix greylisting policy service with auto-whitelisting that uses an SQL database as its storage backend. It is based on postgrey, refining auto-whitelisting and storing whitelists and connection attempts in a database. Greylisting stops 50 to 90 % junk mails (spam and virus) before they reach your Postfix server, saving bandwidth, user time and CPU time.


Download version 1.6.4 (stable)
released on 8 July 2005

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Related Projects


LicenseVerified byVerified onNotes
GPLv2orlaterJanet Casey12 October 2004

Leaders and contributors

Lionel Bouton Maintainer

Resources and communication

Audience Resource type URI
Developer VCS Repository Webview
Support Mailing List Info/Archive

Software prerequisites

Kind Description
Required to use perl-DBI
Required to use Postfix 2.1 or later
Required to use Perl 5.005 or later
Required to use Net_Server
Required to use IO_Multiplex

This entry (in part or in whole) was last reviewed on 23 October 2007.


Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the page “GNU Free Documentation License”.

The copyright and license notices on this page only apply to the text on this page. Any software or copyright-licenses or other similar notices described in this text has its own copyright notice and license, which can usually be found in the distribution or license text itself.

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