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Mirror/backup your vpopmail domains to another Qmail server. Run it through cron and have a hot-backup server ready for action in case your main server crashes.

To mirror the entire /home/vpopmail structure, on the destination server:

rsync -avx --delete -e ssh root@<source_server>:/home/vpopmail /home/

To mirror just a domain, on the destination server::

rsync -avx --delete -e ssh root@<source_server>:/home/vpopmail/domains/<domain> /home/vpopmail/domains

Instructions for setting up public keys so rsync won't require a password.

Automate using cron
Create a script in /usr/local/bin/vpop_rsync, such as:

#!/bin/sh
rsync -avx --delete -e ssh root@<server>:/home/vpopmail/domains/<domain> /home/vpopmail/domains

Make the script executable:

chmod ugo+x /usr/local/bin/vpop_rsync

Create a text file /etc/cron.d/vpop_rsync with a cron command to execute the sync script:

# Sync the domain at 3am every night.
0 3 * * * root /usr/local/bin/vpop_rsync

Refer to the cron page for further details and cron tricks.

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