🚀 go-pugleaf

johnj@aplcen.apl.jhu.edu (7058 work) writes:
   The trouble is that a few weeks ago, our host was added to a an
   internet name server. Our primary host we wanted to be able to address
   as either welchvax.welch.jhu.edu or by our domain name, welch.jhu.edu.
   ...
   Our sendmail file has lines as follows that I thought would help to
   resolve its hostname before conecting to itself (both in S0 before tcp
   stuff):
	   R$-<@welchvax.welch.jhu.edu>	$1
	   R$-<@welch.jhu.edu>	$1

Given
	DDwelch.jhu.edu
and $j defined appropriately, I suggest, in S0:
	R$+<@$D>		$#local$:$1
	R$+<@$j>		$#local$:$1
or, if you generalize all hostnames to the domain name as we do:
	R$+<@$*$D>		$#local$:$1

Forget the silly hostname stripping and re-running through S0; once
you've detected local mail, deliver it immediately and be done with it.

--Karl