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

[Todd Snyder]

If you are trying to reach RIM.com (makers of BlackBerry), we are at rim.com

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

;; ANSWER SECTION:
rim.com.               600     IN      MX      10 mx05.rim.net.
rim.com.               600     IN      MX      10 mx03.rim.net.
rim.com.               600     IN      MX      10 mx04.rim.net.

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

;; ADDITIONAL SECTION:
xns01lhr.rim.net.      213     IN      A       193.109.81.21
xns01ykf.rim.net.      213     IN      A       206.51.26.10


If you are really looking for rimm.com, I don't see MX records for them either:

>dig rimm.com MX

; <<>> DiG 9.7.0-P1 <<>> rimm.com MX
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 7908
;; flags: qr aa; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

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

;; AUTHORITY SECTION:
rimm.com.               3600    IN      SOA     ns1.netincomehost.com. admin.netincomehost.com. 2010012200 3600 600 1209600 3600



From: bind-users-bounces+tsnyder=rim.com at lists.isc.org [mailto:bind-users-bounces+tsnyder=rim.com at lists.isc.org] On Behalf Of Samad Agha
Sent: Thursday, August 19, 2010 2:18 PM
To: bind-users at lists.isc.org
Subject: I get "No mail exchanger (MX) records available for rimm.com" error just for a couple of domains

#nslookup
> set query=mx
> rimm.com<http://rimm.com>

*** No mail exchanger (MX) records available for rimm.com<http://rimm.com>


Obviously Rimm's DNS cannot be down! What gives? Any ideas?

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