Cory Coager wrote:
Victor Duchovni said the following on 01/22/2009 12:31 PM:
On Thu, Jan 22, 2009 at 12:26:54PM -0500, Cory Coager wrote:
What is the syntax for specifying multiple addresses in transport for smtp?
Something like:
example.com smtp:[gateway1.example.com] smtp:[gateway2.example.com]
No, there is no multi-nexthop syntax in the transport table. However, with
SMTP, you are free to use names that resolve to multiple IP addresses,
or names (without []) that have multiple MX records.
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.
--
Noel Jones
