Get Cyrus

Where and how do you want to get Cyrus?

Distribution Package

Cyrus IMAP packages are shipped with every major distribution, including but not limited to Fedora, Red Hat Enterprise Linux, CentOS, Scientific Linux, Debian, Ubuntu, openSUSE, Gentoo, Mageia and ClearOS. They are not guaranteed to be up to date.

Build and Install Yourself

Use a release packaged tarball

The Cyrus team produce packaged tarballs containing full source and pre-built documentation.

Download a versioned tarball using HTTPS. Latest stable version is 3.10.0.

Extract the tarball:

$ tar xzvf cyrus-imapd-x.y.z.tar.gz

Use the source from Git

Read our Guide to GitHub for details on how to access our GitHub repository, and fork/clone the source.

External Tools

These are projects that are not directly developed or managed under the umbrella of the Cyrus Project, but may provide enhancements or additional functionality.

Both of these projects are not under active development, but are definitely worthwhile and would be Good Things to have available. If you think you'd be interested in taking them on and bringing them up to speed, we encourage you to contact the original authors.

There is an effort to develop Cyrus utilities.

Additionally, a Cyrus administrative GUI is available from http://korreio.sf.net

Licensing

All versions of the Cyrus IMAP server and Cyrus SASL library are now covered by the following copyright message. However, please note that in older distributions, there may still be files that have the old copyright text.

* Copyright (c) 1994-2017 Carnegie Mellon University.  All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in
*    the documentation and/or other materials provided with the
*    distribution.
*
* 3. The name "Carnegie Mellon University" must not be used to
*    endorse or promote products derived from this software without
*    prior written permission. For permission or any legal
*    details, please contact
*      Office of Technology Transfer
*      Carnegie Mellon University
*      5000 Forbes Avenue
*      Pittsburgh, PA  15213-3890
*      (412) 268-4387, fax: (412) 268-7395
*      tech-transfer@andrew.cmu.edu
*
* 4. Redistributions of any form whatsoever must retain the following
*    acknowledgment:
*    "This product includes software developed by Computing Services
*     at Carnegie Mellon University (http://www.cmu.edu/computing/)."
*
* CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.