Callum Lerwick writes:
> The real issue is reliability. A reasonable quality $600-$1000 desktop
> is probably fine for most small business. Backup to tape or a second
> hard drive.

This is bad advice for an email server.  With most mail severs, you cannot
reliably backup the queue or the mailstore, since the state is constantly
changing.  The only freely available mail server that has built in
clustering is PowerMail (dbmail allows for clustering via the database).
The best way to backup a mail server is to use RAID.  Any backup you have
will be way too old.

If users are storing mail on the server, as with IMAP, then it could be
prudent to backup the mailstore, but only as an emergency measure against
RAID failure.

-- 
David Phillips <david at acz.org>
http://david.acz.org/


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