== Migrating Mailman Between Servers ==

 0. Copy `/etc/mailman` to new server
    * Might just need `mm_cfg.py` and `vhosts_cfg.py`
 0. Copy `/etc/exim4/mailmandb` to new server
 0. Stop mailman to prevent messages from being delivered while copying data: `service mailman stop`
 0. Copy `/var/lib/mailman` to new server
 0. In `/etc/exim4/conf.d/main/01_exim4-config_listmacrosdef` on:
    * the new mailman host: unset `HCOOP_MAILMAN_RELAY_HOST` 
    * all other mail servers: set `HCOOP_MAILMAN_RELAY_HOST` to the new mailman host
 0. Start mailman on new server: `service mailman start`
 0. Reload exim, and everything ought to work

=== Individual Lists ===

Not entirely sure, but [[https://mail.python.org/pipermail/mailman-users/2016-October/081482.html|an old post on mailman-users]] might have some insight.

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