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SMTP proxy

MessageWall is an SMTP proxy. It sits between the outside world and your mail server and keeps out viruses, spam, and mail relaying. It offers filtering via header and body checks, DNS-based blacklists for IP addresses (DNSBL) and domains (RHSBL), and DNS-based distributed checksumming (DNS DCC) similar to Vipul's Razor. Features can be filtered on a per-address basis, and since MessageWall communicates via SMTP, it works with any MTA. It also offers message tagging as a per-address configurable alternative to message blocking. MessageWall organizes filtering customizations into profiles. The configuration file defines a default profile, and a seperate file specifies addresses and domains with profiles other than the default. Each profile contains a set of rules for how to filter mail. There are currently 14 rules available.


version 1.0.8 (stable)
released on 18 October 2002


Related Projects



Verified by

Verified on


Verified by

Janet Casey

Verified on

19 June 2002

Leaders and contributors

Ian Gulliver Maintainer

Resources and communication

AudienceResource typeURI
Bug Tracking,Developer,

Software prerequisites

Required to usefirestring
Required to usefiredns
Required to usedaemontools (with 'svscan' running)

This entry (in part or in whole) was last reviewed on 17 May 2005.


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