I have plan to migrate my old email server Zimbra integration with Mailman from single to multi server. I have been success to integrated Mailman with Zimbra multi server and has been wrote on previous article at here : http://imanudin.net/2014/09/21/zimbra-tips-integrating-mailman-mailing-list-on-zimbra-multi-server/.
Now, i must migrating all mailing list on old email server to new mail server. Because i am using Mailman as engine mailing list server, migrating from old mailing list server to new mailing list server doesn’t really difficult.
The following is steps how to migrate Mailman from old server to new server. Do the following command on old mailing list server
Moving all list
rsync -avz /var/lib/mailman/lists root@new-server:/var/lib/mailman/
rsync -avz /var/lib/mailman/data root@new-server:/var/lib/mailman/
rsync -avz /var/lib/mailman/archives root@new-server:/var/lib/mailman/
# Checking after migrate
Do the following command on new mailing list server
# Regenerate Aliases
Because new mailing list server doesn’t know new database Mailman, do the following command
cd /usr/lib/mailman/bin ./genaliases
# Change Hostname
If you have different access URL new mailing list with old mailing list server (example : from list.example.com to mailman.example.com), do the following command
cd /usr/lib/mailman/bin ./withlist -l -r fix_url -a
After all mailing list has been migrated, please try to sending to one mailing list.
Good luck and hopefully useful 😀