Date: 09 Feb 2006 13:06:55 -0500 From: Lowell Gilbert <freebsd-questions-local@be-well.ilk.org> To: freebsd-questions@freebsd.org Subject: Re: Mail back-up system Message-ID: <44lkwkxv7k.fsf@be-well.ilk.org> In-Reply-To: <65064.64.81.51.215.1139504956.squirrel@www.astrokid.com> References: <200602090700.k1970DiJ095554@banyan.cs.ait.ac.th> <18e02bd30602090026h2e297677sc6742cbb653aede5@mail.gmail.com> <200602090910.k199AKB6011124@banyan.cs.ait.ac.th> <44irrozl0q.fsf@be-well.ilk.org> <65064.64.81.51.215.1139504956.squirrel@www.astrokid.com>
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> >> Considering we have only 200 users and 3000 messages per day, whatever > >> would do. > >> > >> MTA is sendmail/milter. > >> > >> I plan to change that mailbox thing when I get budget for a new > >> machine to play with (I don't want to take the risk to break the > >> working configuration). > > > > Mailbox format might not be a bottleneck in this application. It's > > fairly efficient at appending new messages, and that is the only > > common operation being performed on these backup mail spools. > > I could see this as an advantage of the Maildirs format. > > Since every mail is stored in its own file (versus concatenation in Mbox), > it's much cheaper to backup. Just copy all the new/touched files, not all > your mail. Yes, that's a good point. Because these files are *already* backups, I assumed that they wouldn't be backed up themselves, but that may well not be the case. The other approach is the one I use for a lot of automatic archives on my own system; rotate the files on an appropriate schedule. [Where "appropriate" is an administrative call, but probably related to the backup schedule.] > I just have a second disk on the server that I rsync everything to on an > hourly basis. That doesn't solve the original poster's mail backup problem, though. In fact, the original problem from this thread is different than any other kind of backup issue I had considered before.
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