MX doesn't resolve if not helped a bit...

[James A Griffin]

Sacha wrote:
> 
> Hello,
> 
> I have a strange problem. Mail sent to @cogito-info.com is either
> correctly and promptly delivered, either delayed or never arrives.
> While it seems as a truism, the last two cases are *very* frequent.
> 
> To check the problem, I have subscribed to a yahoogroups which gives
> history information about unsucessfull delivery. Result : I have
> plenty of "No MX or A record for cogito-info.com" in my history.
> 
> some info regarding cogito-info.com. :
>  - DNS1: 194.38.95.241, NS1.COGITO-INFO.CH (please read *ch* and not
> *com* here)
>  - DNS2: 194.38.95.241, NS2.COGITO-INFO.CH
> 
[SNIP]

There is a difference in the name servers for cogito-info.com from the
.com GTLD (non-auth) and the  name servers from the (auth) servers.  See
the 'doc' run below:


Doc-2.2.2: Starting test of cogito-info.com.   parent is com.
Doc-2.2.2: Test date - Mon May 28 22:39:38 EDT 2001
Note: Skipping parent domain testing
Found 2 NS and 0 glue records for cogito-info.com. @a.gtld-servers.net.
(non-AUTH)
Using NSlist from parent domain server a.gtld-servers.net.
NS list summary for cogito-info.com. from parent (com.) servers
  == ns1.cogito-info.ch. ns2.cogito-info.ch.
soa @ns1.cogito-info.ch. for cogito-info.com. serial: 9
soa @ns2.cogito-info.ch. for cogito-info.com. serial: 9
SOA serial #'s agree for cogito-info.com.
Authoritative domain (cogito-info.com.) servers agree on NS for
cogito-info.com.ERROR: NS list from cogito-info.com. authoritative
servers does not
  === match NS list from parent (com.) servers
NS list summary for cogito-info.com. from authoritative servers
  == cogito-ns1.labourey.com. cogito-ns2.labourey.com.
ERROR: ns1.cogito-info.ch. claims to be authoritative, but does not
appear in
NS list from authoritative servers
ERROR: ns2.cogito-info.ch. claims to be authoritative, but does not
appear in
NS list from authoritative servers
Checking 0 potential addresses for hosts at cogito-info.com.
  ==
Summary:
   ERRORS found for cogito-info.com. (count: 3)
Done testing cogito-info.com.  Mon May 28 22:39:44 EDT 2001