I get "No mail exchanger (MX) records available for rim.com" error just for a couple of domains

[Dave Sparro]

On 8/19/2010 2:58 PM, Samad Agha wrote:
> Dave or anyone else who can help:
>
> 4- Yes, is only rim.com <http://rim.com> & tmo.blackberry.net
> <http://tmo.blackberry.net> that error out. Everything else resolves
> just fine on ns2 and EVERYTHING, including rim.com <http://rim.com> &
> tmo.blackberry.net <http://tmo.blackberry.net>, get resolved on ns1:
>
> root at harley:/var/adm # nslookup
> Default Server: ns2.ci.glendale.ca.us <http://ns2.ci.glendale.ca.us>
> Address:  206.117.120.66
>
>  > rim.com <http://rim.com>
> Server: ns2.ci.glendale.ca.us <http://ns2.ci.glendale.ca.us>
> Address:  206.117.120.66
>
> *** ns2.ci.glendale.ca.us <http://ns2.ci.glendale.ca.us> can't find
> rim.com <http://rim.com>: Non-existent host/domain
>  > tmo.blackberry.net <http://tmo.blackberry.net>
> Server: ns2.ci.glendale.ca.us <http://ns2.ci.glendale.ca.us>
> Address:  206.117.120.66
>
> *** ns2.ci.glendale.ca.us <http://ns2.ci.glendale.ca.us> can't find
> tmo.blackberry.net <http://tmo.blackberry.net>: Non-existent host/domain


Okay, maybe we're getting somewhere.

the two domains in question are served by the same two DNS servers:

;; AUTHORITY SECTION:
blackberry.net.         600     IN      NS      xns01ykf.rim.net.
blackberry.net.         600     IN      NS      xns01lhr.rim.net.

;; ADDITIONAL SECTION:
xns01lhr.rim.net.       159     IN      A       193.109.81.21
xns01ykf.rim.net.       160     IN      A       206.51.26.10

One of the RIM servers (xns01lhr.rim.net) appears to be down from here 
as well, so that could be what caused you to have a problem suddenly.

You probably want to look at the network path between your NS2 server 
and the xns01lhr.rim.net (206.51.26.10) server.

Going out on a limb here, but what's the netmask on your NS2 server?


-- 
Dave