[ NNSquad ] DynDns configuration and contact failures

[Lauren Weinstein <lauren@vortex.com>]

Greetings.  If any dyndns users receive NNSquad messages
successfully (perhaps via aliases) I'd appreciate it if you'd ask
their postmaster (assuming they have one, see below) to contact me.
Mail to dyndns users on the NNSquad mailing list appears to be
failing with MX looping errors, and it's unclear if mail to
postmaster@dyndns.org was successful, given the stream of postmaster
recipient errors.  No contact by phone either as of yet.

Thanks.

--Lauren--
NNSquad Moderator

  - - -

Date:    Wed, 12 Mar 2008 17:18:19 EDT
From:    Mail Delivery System <Mailer-Daemon@dyndns.com>
Subject: Mail delivery failed: returning message to sender
To:      lauren@vortex.com
X-Spam-Status: NO, hits=0.00 required=6.00

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

  jeremy@zimbra-01-bos.dyndns.com
    (ultimately generated from postmaster@dyndns.org)
    SMTP error from remote mail server after RCPT TO:<jeremy@zimbra-01-bos.dyndns.com>:
    host zimbra-01-bos.dyndns.com [63.208.196.49]:
    550 5.1.1 <jeremy@zimbra-01-bos.dyndns.com>: Recipient address rejected:
    zimbra-01-bos.dyndns.com
  elinstad@zimbra-01-bos.dyndns.com
    (ultimately generated from postmaster@dyndns.org)
    SMTP error from remote mail server after RCPT TO:<elinstad@zimbra-01-bos.dyndns.com>:
    host zimbra-01-bos.dyndns.com [63.208.196.49]:
    550 5.1.1 <elinstad@zimbra-01-bos.dyndns.com>:
    Recipient address rejected: zimbra-01-bos.dyndns.com
  cmarshall@zimbra-01-bos.dyndns.com
    (ultimately generated from postmaster@dyndns.org)
    SMTP error from remote mail server after RCPT TO:<cmarshall@zimbra-01-bos.dyndns.com>:
    host zimbra-01-bos.dyndns.com [63.208.196.49]:
    550 5.1.1 <cmarshall@zimbra-01-bos.dyndns.com>:
    Recipient address rejected: zimbra-01-bos.dyndns.com
  tom@zimbra-01-bos.dyndns.com
    (ultimately generated from postmaster@dyndns.org)
    SMTP error from remote mail server after RCPT TO:<tom@zimbra-01-bos.dyndns.com>:
    host zimbra-01-bos.dyndns.com [63.208.196.49]:
    550 5.1.1 <tom@zimbra-01-bos.dyndns.com>: Recipient address rejected:
    zimbra-01-bos.dyndns.com