failover vs outsource
- hi postfixers,
been having great fun gathering up the best pieces and cooking up the
perfect system, but now the next challenge is to gather up a few more
nines in our reliability rating. i'm facing the question whether to
implement failover, or bail and outsource instead.
just how hard is it to implement failover to an alternate location?
(not just alternate hardware at the same location!) for example,
arriving mail would need to be arriving on the failover server in
addition to the primary. i'm running postfix with courier-imap and maia
mailguard. (no need to forward the spam of course, and that does amount
to considerable bandwidth.)
if i got the arriving mail issue worked out, perhaps i'd not worry too
much about being several hours behind on database updates, though
offhand i'll bet that keeping mysql synced at an alternate location is a
problem with more widely known solutions than the arriving mail problem.
which leads me to wonder if database mail implementations are maturing
if we're going to outsource, i'd prefer to find what we've already got,
namely, IMAP, clamav and spam filtering, with quarantined spam available
for review in an IMAP folder. is there any such service out there?
please pass me pointers to relevant discussions, thanks.