MX query fails

[Stefan Puiu]

Well at least dnsreport.com <http://dnsreport.com> is able to find the MX 
record for your zone; dig from my host also finds it, and I'm able to telnet 
to the respective host on port 25. 
$ dig mx mclaneco.com <http://mclaneco.com>

; <<>> DiG 9.3.1 <<>> mx mclaneco.com <http://mclaneco.com>
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 340
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;mclaneco.com. IN MX

;; ANSWER SECTION:
mclaneco.com <http://mclaneco.com>. 600 IN MX 10
mcgw01.mclaneco.com<http://mcgw01.mclaneco.com>
.

If I dig for mcgw01..., I also get an apparently correct answer back - with 
IP 12.161.66.24 <http://12.161.66.24>. 

Thing is, if you scroll down in the report generated by dnsreport: 

http://www.dnsreport.com/tools/dnsreport.ch?domain=mclaneco.com

You'll see it says your mail server is an open relay - that's quite bad. You 
should fix that. 

On 2 Sep 2005 06:51:12 -0700, czimmer at wczimmerman.dyndns.org <
czimmer at wczimmerman.dyndns.org> wrote:
> 
> Can some of the DNS experts chime in here?
> 
> Our zone: mclaneco.com <http://mclaneco.com>
> Queries from 204.238.58.50 <http://204.238.58.50> & 51 cannot get a 
> response for an MX query
> from our DNS servers. Other name servers seem to work fine. We put a
> packet sniffer on the network yesterday and saw the reply UDP packet
> going out to the above IP, but apparently it never makes it there.
> We're looking into a possible network issue of some sort, but I want to
> verify with the experts that we don't have something misconfigured
> here. From www.network-tools.com <http://www.network-tools.com> we get a 
> Timed Out error when doing
> the MX query on our domain. Yet, email is working from thousands of
> others.
> 
> 
>