Noel Jones said the following on 01/22/2009 03:20 PM:
Is there another way of adding multiple addresses for transport of a
domain? Round robin DNS would work I guess but not as good as a
failover. If one of the addresses in the DNS is down the transport
is going to get delayed for that MX and the mailq is going to build up.
Why would an address in DNS being down be any different from an
address specified in a config file being down?
Anyway, if you don't want to put special entries in DNS you can add
entries to your hosts file to simulate multiple A records.
I guess you are right, failover would try the primary and wait for a
timeout before attempting the failover address.
I was just looking into the hosts file but it doesn't seem like postfix
refers to it as I'm getting bounce messages:
Host or domain name not found. Name service error for
name=smtptest.localhost type=A: Host not found
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