I think NODNS may be a noop in recent sendmails - try configuring
/etc/nsswitch.conf to use files and check that all interfaces used by
sendmail are in /etc/hosts.

Manuel Bouyer writes:
 > On Mon, Oct 22, 2001 at 05:16:55PM +0200, Stuart Brooks wrote:
 > > I have a problem which I am hoping one of you might have a solution to. I
 > > need to use sendmail to post to my personal e-mail address but I need to be
 > > able to do it without doing a DNS lookup if possible.
 > > 
 > > If I set up my /etc/resolv.conf file with my local dns, the mail is sent
 > > fine (understandably), but removing resolv.conf results in the following
 > > message being displayed when I run mailq:
 > > 
 > > (Deferred: Name server: cat.co.za. : host name lookup failure)
 > > 
 > > I have played around a bit with different entries in my /etc/hosts file
 > > without too much luck, has anyone got any ideas? Any help would be much
 > > appreciated?
 > 
 > I think it's because it tries to do some canonalization on it.
 > Check /usr/share/sendmail/README, for something like NODNS.
 > Maybe you need other options too ...
 > 
 > --
 > Manuel Bouyer, LIP6, Universite Paris VI.           Manuel.Bouyer@lip6.fr
 > --

-- 
Rex McMaster