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GNU Anubis
Processes outgoing mail

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.


Heckert gnu.small.png This is a GNU package:anubis


version 4.2 (stable)
released on 23 May 2014

User level


VCS Checkout




Verified by

Verified on


Verified by


Verified on

14 June 2014

Leaders and contributors

Wojciech Polak Maintainer
Sergey Poznyakoff Maintainer

Resources and communication

AudienceResource typeURI
Python (Ref)
Ruby (Ref)
Savannah (Ref)
Debian (Ref)
VCS Repository Webview
Mailing List

Software prerequisites

Weak prerequisitegsasl, an implementation of the SASL framework
Weak prerequisitePAM (Pluggable Authentication Modules)
Weak prerequisiteGDBM, MySQL or PostgreSQL
Weak prerequisitelibwrap (TCP wrappers), an access control library
Weak prerequisiteGnuTLS
Weak prerequisiteThe TCP/IP Identification Protocol (RFC 1413) server (any)
Weak prerequisiteGuile
Weak prerequisiteGnuPG with GPGME
Weak prerequisitePCRE

This entry (in part or in whole) was last reviewed on 8 May 2018.


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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.