Smarthost Failover - WAS RE: [Mimedefang] SMTP mailertable question

[WBrown at e1b.org]

mimedefang-bounces at lists.roaringpenguin.com wrote on 01/07/2004 03:26:23 
PM:
> Hmmm.  I mentioned it because []'s are used in the mailertable to tell
> sendmail "Don't look up an MX for this hostname, just assume that that
> hostname accepts incoming SMTP on port 25".  It works just fine with
> hostnames there.  It still does a lookup for the A record so it can
> connect to that host, but it doesn't do any further DNS checks.
> 
> For instance, in the mailertable on the hosting server here, I have
> lines like:
> 
> domain.com   esmtp:[domain.com]
> 
> They host their own mail, but our hosting server is a backup MX, and
> leaving out the brackets may cause sendmail to go into a loop trying to
> deliver to itself.  :/  (I think it actually did so once.)

Can multiple hosts be used on an entry in mailertable?  Something along 
the lines of:

Domain.org      smtp:[server.domain.org],[server2.domain.org]

I didnt see anything like that yet in the documentation for sendmail.