Sender domain must resolve problem

[Mark.Andrews at nominum.com]

	rtds.com has a bad delegation.  Niether of the delegated servers
	is serving rtds.com.

	The parent zone has NS1.ESCAPE.CA and NS2.ESCAPE.CA listed as the
	servers.

	Mark

> 
> At 8:46 PM +0200 10/12/00, Igmar Palsenberg wrote:
> >  > >>> MAIL From:<rjd at rtds.com> SIZE=7931
> >>  451 <rjd at rtds.com>... Sender domain must resolve
> >
> >nslookup rtds.com doesn't resolve. Sendmail requires it (actually, the map
> >classes do)
> >
> >Add a
> >
> >rtds.com.		A	xxx.xxx.xxx.xxx to your DNS.
> 
> No, the sendmail lookups require either a valid MX record or a valid 
> A record, and rtds.com has a valid MX:
> 
> $ dig rtds.com mx
> 
> ; <<>> DiG 9.0 <<>> rtds.com mx
> ;; global options:  printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 48351
> ;; flags: qr rd ra ad; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 3
> 
> ;; QUESTION SECTION:
> ;rtds.com.                      IN      MX
> 
> ;; ANSWER SECTION:
> rtds.com.               13252   IN      MX      10 mail.rtds.com.
> 
> [etc]
> 
> I would say that someone's ruleset is broken (and I know this 
> empirically because I receive mail from *@yahoo-inc.com to my home 
> address just fine, and "dig yahoo-inc.com a" will fail)
> 
> D
> 
> 
--
Mark Andrews, Nominum Inc.
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at nominum.com