On Thu, Aug 21, 2014 at 01:05:51PM CEST, Erwan David <er...@rail.eu.org> said: > On Thu, Aug 21, 2014 at 12:37:33PM CEST, Joe Acquisto-j4 > <j...@j4computers.com> said: > > New to list, been using postfix for a little while. > > > > I would like to point a postfix install to two outbound relay's (all > > outbound mail to go thru them) so that, should one be unavailable, it will > > attempt to send via the other. Not "round robin" but "fail over". > > > > This is probably simple, but have not found a clear description of how to. > > Is it as simple as adding a second IP, comma separated? > > > > Use a local DNS with 2 MX entries > myrelay.office MX 10 IP1 > myrelay.office MX 20 IP2 > > then use relayhost=myrelay.office (without the square brackets to have a MX > resolution) >
Sorry for the shirtcut : the MX record must be the name of a A record and connat be an IP address.