Moving off Google Apps
LUG@UCLA plans to move all mail services (including lists) off Google apps. This is a long term project, but the ETA is before Spring quarter 2014.
- MTA: Postfix
- MDA/LDA: Dovecot LDA
- MSS: Dovecot
- MUA: Roundcube
- lists: Mailman
- storage format: Maildir
- storage redundancy: Tahoe-LAFS
- storage backup: duplicity to NFS share, duplicity to VTLUUG, etc.
Use the traditional Maildir format for storing mail. Make the MDA/LDA store it under the Tahoe-LAFS $BASEDIR directory so it can be accessed from multiple different MSSs and MUAs.
Occasionally copy the Maildir directory out of the Tahoe-LAFS share since we don't actually trust Tahoe-LAFS. We respect people's privacy, so don't just rsync it out to a 3rd party. Easiest solution would be to use Duplicity to automatically perform encrypted, incremental backups to the 3rd party.