Hi All, I'm running DBMail 1.x/MySQL and Postfix on a Redhat server now, and I just had to expand to another server. What I'd like to do is install a similar setup on the new server, which is easy enough, but I was wondering if there's a good way to make them failover to the other server.
This may be more of a MTA question, but consider I have server A, and Server B. Clients on Server A, use MX 10 A, MX 20 B as their DNS MX records, and on Server B, I have MX 10 B, MX 20 A, so that the other server will act as a backup and hold the mail if the primary is unavailable and attempt to deliver it later. I'm pretty sure this is possible, but has anyone seen any good howto's on the subject? I just poked through the Postfix Docs and it wasn't obvious how to do it. I'm going to google around a bit and see if I can find something, but I figured I'd ask you experts. :) -Micah
