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Mirroring ftp.mozilla.org

Our file archive is available at http://ftp.mozilla.org/pub/mozilla.org, and our releases archive is available at http://releases.mozilla.org/pub/mozilla.org, as well as from a number of mirrors all over the world. We highly recommend you use one of our mirrors to get the latest Mozilla software.

If you would like to mirror the contents of the archives, we offer rsync access to do so. We have two different modules available for your use:

  • releases-rsync.mozilla.org::mozilla-current/, contains only the current version of Firefox and Thunderbird, Size: 10-15 GB;
  • releases-rsync.mozilla.org::mozilla-releases/, contains several recent versions of Firefox, Thunderbird, SeaMonkey, Sunbird and other Mozilla product releases, as well as Add-ons (extensions, themes, etc), Size: 70-100 GB.

Use them as follows:

Current releases only: rsync -a --delete --delete-before releases-rsync.mozilla.org::mozilla-current/ /your/local/mirror/path/

All releases: rsync -a --delete --delete-before releases-rsync.mozilla.org::mozilla-releases/ /your/local/mirror/path/

The mozilla-all module, which is the complete archive (what's visible on ftp.mozilla.org, 2.7TB and growing), is no longer publicly available via rsync due to its size. If you really want it all, contact us to make arrangements.

We are currently only accepting HTTP mirrors at this time.

To mirror us correctly, you will need to add the following directives to the <VirtualHost> or <Directory> configuration block (if you're using Apache HTTPD) for your mirror so that Apple disk images, Mozilla XPInstaller packs, partial updates, and JAR files are downloaded correctly to end-users' browsers. Users hate it when they click a file and get a browser window full of garbage. Our download redirector will not send requests to you if you are serving the files with the wrong MIME types. 


    AddType application/x-apple-diskimage dmg
    AddType application/x-xpinstall xpi
    AddType application/x-java-archive jar
    AddType application/octet-stream mar
    AddType application/octet-stream msi
    AddType application/vnd.ms-cab-compressed cab
    AddType application/x-install-instructions install

Alternately, add "AllowOverride FileInfo" to the appropriate configuration block and the /pub/mozilla.org/.htaccess file will add them for you automatically.

If you're not using Apache HTTPD, you'll need to make the necessary equivalent changes in your server config to make sure the MIME types are correct.

If you would like to be listed on the mirrors page, and included in our automatic redirect pool, please send email to mirror-submissions@mozilla.org with the following information:

  • Mirror location (country, city, state, province);
  • Mirror connection speed; (and the maximum traffic you can sustain for your mirror);
  • URL of your HTTP mirror (e.g. http://example.com/pub/mozilla.org/).
  • Name you want it listed as on http://www.mozilla.org/mirrors.html.

Please set your mirror to update every 15 minutes so we can assure that our network of mirrors is as fresh as possible. We will be monitoring the quality of your mirror for responsiveness and validity several times a day. Currently, basic availability checks are run on the most popular files every 5 minutes.

Your server must be able to accept Range requests to be included in our automatic redirect pool. Apache HTTPD is known to support this by default.

If you've signed up to be included in our automatic redirect pool, please sign up for the mirrors@mozilla.org mailing list which will be used to notify mirror admins of impending releases and changes to mirroring policy.

For feedback, or if you have any questions, contact mirror-submissions@mozilla.org or visit the #mirrors channel on irc.mozilla.org.

Our FTP site contains cryptographic source code and binaries derived from this code which are regulated in certain countries including the U.S. Before mirroring our FTP site, read our Crypto FAQ.

This software is subject to the U.S. Export Administration Regulations and other U.S. law, and may not be exported or re-exported to certain countries (currently Cuba, Iran, Libya, North Korea, Sudan and Syria) or to persons or entities prohibited from receiving U.S. exports (including those (a) on the Bureau of Industry and Security Denied Parties List or Entity List, (b) on the Office of Foreign Assets Control list of Specially Designated Nationals and Blocked Persons, and (c) involved with missile technology or nuclear, chemical or biological weapons).