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GNU Anubis is an SMTP message submission daemon. It represents an intermediate layer between mail user agent (MUA) and mail transport agent (MTA), receiving messages from the MUA, applying to them a set of predefined changes and finally inserting modified messages into an MTA routing network. The set of changes applied to a message is configurable on a system-wide and per-user basis. The built-in configuration language used for defining sets of changes allows for considerable flexibility and is easily extensible. GNU Anubis can edit outgoing mail headers, encrypt and/or sign mail with the GNU Privacy Guard, build secure SMTP tunnels (Simple Mail Transport Protocol) using the TLS/SSL encryption even if your mail user agent doesn't support it, or tunnel a connection through a SOCKS proxy server.


The Anubis Manual is available < a href=";>for download.

Heckert gnu.small.png This is a GNU package


Download External-link-icon.png version 4.1.1 (stable)
released on 22 December 2008

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LicenseVerified byVerified onNotes
GPLv3orlaterKelly Hopkins22 December 2008
GPLv2Kelly Hopkins22 December 2008

Leaders and contributors

"Email" Wojciech Polak Maintainer
"Email" Sergey Poznyakoff Maintainer

Resources and communication

Audience Resource type URI
Bug Tracking,Developer,Support E-mail
Developer VCS Repository Webview

Software prerequisites

Kind Description
Weak prerequisite GNU Privacy Guard
Weak prerequisite PCRE
Weak prerequisite Guile
Weak prerequisite GnuTLS
Weak prerequisite GPGME
Weak prerequisite pidentd

This entry (in part or in whole) was last reviewed on 18 December 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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