From: "Frank Haber" 

(answering self...)

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X-Failed-Recipients: geo{at}barkto.com From: Mail Delivery System

To: frhaber{at}rcn.com
Subject: Mail delivery failed: returning message to sender
Message-Id: 
Date: Sat, 17 May 2003 16:29:45 -0400

This message was created automatically by mail delivery software (Exim).

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:

  geo{at}barkto.com
    all relevant MX records point to non-existent hosts:
    it appears that the DNS operator for this domain has installed an invalid
MX record with an IP address instead of a domain name on the right hand side

------ This is a copy of the message, including all the headers. ------

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 for geo{at}barkto.com; Sat, 17 May 2003 16:29:45 -0400
Message-ID: 
From: "Frank Haber" 
To: 
Subject: Your Muddah Wears Army Boots
Date: Sat, 17 May 2003 16:29:18 -0400
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...and so's your old man.
=================================
NSLookUp - Saturday, May 17, 2003 17:02:54 Generated by CyberKit Version 2.5
Copyright C 1996-2000 by Luc Neijens

Name Server: 207.172.3.9
Query: barkto.com
Type of Search: MX - Mail exchange
Protocol: UDP
Verbose: Yes
Recursion Desired: Yes

Header:
   ID=41838, QR=Response, Opcode=QUERY, RCODE=NO ERROR
   Authoritative Answer=No, Truncation=No
   Recursion Desired=Yes, Recursion Available=Yes
   QDCOUNT=1, ANCOUNT=1, NSCOUNT=3, ARCOUNT=3
Question:
   Name=barkto.com, QTYPE=MX, QCLASS=1
Answer Section:
- Name=barkto.com
    Type=MX, Class=1, TTL=3574 (59 Minutes 34 Seconds), RDLENGTH=17
    Preference=10, Mail Exchange=64.215.164.20
Authority Records Section:
- Name=barkto.com
    Type=NS, Class=1, TTL=3574 (59 Minutes 34 Seconds), RDLENGTH=12
    Name Server=ns.nls.net
- Name=barkto.com
    Type=NS, Class=1, TTL=3574 (59 Minutes 34 Seconds), RDLENGTH=6
    Name Server=ns1.nls.net
- Name=barkto.com
    Type=NS, Class=1, TTL=3574 (59 Minutes 34 Seconds), RDLENGTH=6
    Name Server=ns2.nls.net
Additional Records Section:
- Name=ns.nls.net
    Type=A, Class=1, TTL=24676 (6 Hours 51 Minutes 16 Seconds), RDLENGTH=4
    IP Address=216.144.8.10
- Name=ns1.nls.net
    Type=A, Class=1, TTL=24676 (6 Hours 51 Minutes 16 Seconds), RDLENGTH=4
    IP Address=216.144.0.10
- Name=ns2.nls.net
    Type=A, Class=1, TTL=24676 (6 Hours 51 Minutes 16 Seconds), RDLENGTH=4
    IP Address=216.144.0.11
-+-

-frh

--- BBBS/NT v4.01 Flag-4