Miles Fidelman wrote: > - you can set up a 2ndry server (give it an MX record with lower > priority than the primary server) - it will receive mail when the > primary goes down; and you can set up the mail config to forward stuff > automatically to the primary server when it comes back up -- people > won't be able to get to their mail until the primary comes back up, but > mail will get accepted and will eventually get delivered > Just one additional note: in such a setup, you should not assume that the secondary server only receives mail when the first one is down from your side of view. A client somewhere might have a different connectivity view and might deliver mail to your secondary MX at any time. It is well-known that spammer systems even try to deliver to the secondary in the hope that protection there is lower. So, if you have a secondary, you must arrange for mail delivered to that server to be passed on to the primary or a separate backend server. And you need to protect it exactly as good as your primary against virus, spam, and DOS attacks.
Best regards, Jakob Curdes _______________________________________________ Linux-HA mailing list [email protected] http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
