From: Ralf Hildebrandt (Ralf.Hildebrandtcharite.de)
Date: Thu Oct 02 2008 - 02:51:55 CDT

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> > > smtpd[25253]: NOQUEUE: reject: RCPT from
> > > mailgw1.per-se.com[199.190.235.46]: 450 4.1.8
> > > <daemoncss2.ndcorp.com>: Sender address rejected: Domain not found;
> > > from=<daemoncss2.ndcorp.com> to=<owraymarsh.net> proto=ESMTP
> > > helo=<mailgw1.per-se.com>

> For domain lookup You should use whois instead of host

Nonsense.

$ host css2.ndcorp.com
Host css2.ndcorp.com not found: 3(NXDOMAIN)
$ host -t mx css2.ndcorp.com
Host css2.ndcorp.com not found: 3(NXDOMAIN)

WHOIS is use to look up the REGISTRATION details od a delegated domain.
css2.ndcorp.com is not delegated, but ndcorp.com is:

% whois ndcorp.com

...

Registrant:
McKesson Corporation, Inc.
   11000 Trade Center Dr.
   Rancho Cordova, CA 95670
   US
         
Domain Name: NDCORP.COM
...

--
Ralf Hildebrandt (Ralf.Hildebrandtcharite.de) snickebocharite.de
Postfix - Einrichtung, Betrieb und Wartung Tel. +49 (0)30-450 570-155
http://www.arschkrebs.de I'm looking for a job
Solaris, AIX und HP-UX "Unix". Alles Produkte aus der Hölle, offenbar
von völlig Gehirntoten entwickelt und hauptsächlich von Idioten
eingesetzt. OS X paßt doch gar nicht schlecht in den Club.

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