Secondary MX record for mail backup
Does anyone have any pointers or a doc file somewhere on how to setup a
secondary MX server. Basically, if the primary MX is down, then try the
secondary MX (or at least compliant mail servers should try secondary
MX...). The secondary MX server should more-or-less spool/store the
messages, and as soon as the primary MX comes backup, send the messages
back to it.
Thus, no mail is lost or bounced, and everything is back to normal as soon
as the primary MX comes back up.
I run qmail.... but if need be, something else can be run if it makes a
big difference here.
Hopefully some of you have already done this a hundred times and can send
me on the right track :-)
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