MX of securityfocus.com lost?

[Peter Bieringer <pb () bieringer de>]

Hi,

has Symantecs some problems? Currently the MX of securityfocus.com is
completly broken. Take care of restricted postfix installations which are
configured to block senders if MX is not resolvable:


Feb 24 07:59:23 **** postfix/smtpd[***]: ****: reject: RCPT from
unknown[205.206.231.26]: 550
<bugtraq-return-****-pbieringer=example.com () securityfocus com>: Sender
address rejected: Domain not found;
from=<bugtraq-return-****-pbieringer=example.com () securityfocus com>
to=<pbieringer () example com> proto=ESMTP helo=<outgoing.securityfocus.com>


Note also that the mailhost has currently no PTR for it's IPv4 address -
not very professional....


$ host -t NS securityfocus.com
securityfocus.com name server ns1.symantec.com.
securityfocus.com name server ns1.securityfocus.com.
securityfocus.com name server ns2.securityfocus.com.
securityfocus.com name server ns3.symantec.com.

$ host -t MX securityfocus.com ns1.symantec.com.
Using domain server:
Name: ns1.symantec.com.
Address: 198.6.49.5#53
Aliases:

$ host -t MX securityfocus.com ns1.securityfocus.com.
host: Couldn't find server 'ns1.securityfocus.com.': Name or service not
known

$ host -t MX securityfocus.com ns2.securityfocus.com.
host: Couldn't find server 'ns2.securityfocus.com.': Name or service not
known

$ host -t MX securityfocus.com ns3.symantec.com.
Using domain server:
Name: ns3.symantec.com.
Address: 206.204.212.86#53
Aliases:


2 of 4 specified NS servers have currently no A records...

...ohoh...

        Peter
-- 
Dr. Peter Bieringer                     http://www.bieringer.de/pb/
GPG/PGP Key 0x958F422D               mailto: pb at bieringer dot de 
Deep Space 6 Co-Founder and Core Member  http://www.deepspace6.net/
_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.netsys.com/full-disclosure-charter.html