Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!uxc!uxc.cso.uiuc.edu!mcdurb!dparter
From: dparter@mcdurb.Urbana.Gould.COM
Newsgroups: comp.mail.sendmail
Subject: ~RES_DNSRCH in deliver?
Message-ID: <45700002@mcdurb>
Date: 21 Feb 89 22:25:00 GMT
Lines: 25
Nf-ID: #N:mcdurb:45700002:000:776
Nf-From: mcdurb.Urbana.Gould.COM!dparter    Feb 21 16:25:00 1989


Help!

I'm sure that there is a logical reason for this, so I am here to ask
(sorry if it was already discussed and I missed it...)

In sendmail 5.61 (compiled with NAMED_BIND), why does it turn off
RES_DEFNAME and RES_DNSRCH in deliver() ?

I can see the potential danger, if there is a wildcard MX record, but
if there isn't, then users should be able to use partial domain names:

	in domain a.some.sub.dom.ain, 
	mailing to user@host.b.some.sub.dom.ain

	user@host.b would match host@b.some.sub.dom.ain, assuming it
	exists in the namserver.

thanks,

	--david
--------
david parter                            motorola microcomputer division 
dparter@urb.mcd.mot.com                            urbana design center
...uiucuxc!mcdurb!dparter (or dparter@xenurus.gould.com)