You were using Dovecot weren't you? If you're more interested in protecting against server problems than end-user error you might look into http://wiki2.dovecot.org/Tools/Dsync
On 2011-12-28, Wesley M. <[email protected]> wrote: > In fact, > -1- i want to copy the mail server system to another machine. I suppose > rsnaphot > or a dump/restore in single user? is a good choice... > > -2- And keep emails synchronized between the 2 mail server using rsync, > this step is ok. > > Thank you very much for all your replies. > > Cheers, > > Wesley. > > On Wed, 28 Dec 2011 09:30:11 -0700, Darrin Chandler ><[email protected]> wrote: >> On Wed, Dec 28, 2011 at 11:00:52AM -0500, Nick Holland wrote: >>> However, backing up an IMAP mail store daily leaves a lot to be >>> desired. Most likely time for someone to accidentally delete the >>> important mail they have been waiting for is probably not too long >>> after it arrives. Depending (mostly) on the number of messages in >>> your mail store, you may be able to run an rsync of the maildir >>> hourly or maybe even every 15 minutes to another local hard disk. >>> You could make that rsync cumulative -- no removing of deleted >>> files, then daily rsync that backup off to another machine (using >>> --link-dest option for a quick, rotated backup), and then doing an >>> rsync WITH deletion to your local system, so your backup store >>> doesn't grow without bound. >> >> This sounds like a job for rsnapshot: essentailly point-in-time >> snapshots on top of rsync, using hard links of unchanged files for space >> and speed. With some additional shell scripting + cron you could have a >> really nice scheme to keep 15 minute snaps for the last few days, then >> daily for a while, then weekly. I would advise a bit of caution if you're thinking of using big hardlink trees on filesystems which have softdep enabled. No concrete reason I can point to, but this is at least likely to be hard on the system.. (personally I don't use softdep much).
