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Re: OT? /dev/null 5.1.1 email
Brad Knowles wrote:
At 4:00 PM -0400 2005-07-05, Jim Popovitch wrote:However, is seems the problem is over on the secondary MX (Postfix) which only has a list of legit relay domains for pMX. When pMX is back online sMX fwds it's queue, but at that point pMX rejects to sMX...who then rejects to Sender.
What about setting your highest order MX and lowest order MX to point to the same set of mail servers, and hide your backup servers in the middle. Even better if you can implement something that auto blacklists people that connect to your "secondary" MX's when you know that your primaries are up and accepting e-mail.