resolving to a nonexistent mx record

[Michael Varre]

Top post begins....

Damnit, all this time - I resolved the ip to host, so ive been looking for
the host in all these records - never thought to look for the actual IP!!!

Time for a vacation.



> -----Original Message-----
> From: Chip Mefford [mailto:cpm at well.com]
> Sent: Wednesday, July 21, 2004 12:53 PM
> To: Michael Varre; bind-users at isc.org
> Subject: Re: resolving to a nonexistent mx record
> 
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> Michael Varre wrote:
> | Sorry if this ends up being the wrong list, but it seems like it's a DNS
> | issue somewhere.
> |
> | The DNS servers in question are latest 8.x.  When my users send email to
> | @twcny.rr.com 2/3 of the time they receive NDR's back saying:
> Connected to
> | 24.92.226.159 but connection died. That IP resolves to
> nymx02.mgw.rr.com.  I
> | dig twcny.rr.com for mx records and that doesn't exist.  RR tells me
> that
> | used to be one of their MX's but no longer.
> 
> They appear to be mistaken.
> 
> Their name servers still point to it.
> 
> $ dig @dns-pri-01.nyroc.rr.com twcny.rr.com IN MX
> 
> ; <<>> DiG 9.2.2 <<>> @dns-pri-01.nyroc.rr.com twcny.rr.com IN MX
> ;; global options:  printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 40916
> ;; flags: qr aa rd; QUERY: 1, ANSWER: 7, AUTHORITY: 2, ADDITIONAL: 11
> 
> ;; QUESTION SECTION:
> ;twcny.rr.com.                  IN      MX
> 
> ;; ANSWER SECTION:
> twcny.rr.com.           3600    IN      MX      10 nymx-2.nyroc.rr.com.
> twcny.rr.com.           3600    IN      MX      10 nymx05.mgw.rr.com.
> twcny.rr.com.           3600    IN      MX      20 nycmx01.mgw.rr.com.
> twcny.rr.com.           3600    IN      MX      20 nycmx02.mgw.rr.com.
> twcny.rr.com.           3600    IN      MX      30 usny.mgw.rr.com.
> twcny.rr.com.           3600    IN      MX      100 vamx02.mgw.rr.com.
> twcny.rr.com.           3600    IN      MX      10 nymx-1.nyroc.rr.com.
> 
> ;; AUTHORITY SECTION:
> twcny.rr.com.           43200   IN      NS      dns-pri-01.nyroc.rr.com.
> twcny.rr.com.           43200   IN      NS      dns-sec-01.nyroc.rr.com.
> 
> ;; ADDITIONAL SECTION:
> nymx-1.nyroc.rr.com.    1800    IN      A       24.92.226.159
> nymx-1.nyroc.rr.com.    1800    IN      A       24.92.226.164
> nymx-1.nyroc.rr.com.    1800    IN      A       24.92.226.25
> nymx-1.nyroc.rr.com.    1800    IN      A       24.92.226.31
> nymx-2.nyroc.rr.com.    1800    IN      A       24.92.226.31
> nymx-2.nyroc.rr.com.    1800    IN      A       24.92.226.159
> nymx-2.nyroc.rr.com.    1800    IN      A       24.92.226.164
> nymx-2.nyroc.rr.com.    1800    IN      A       24.92.226.25
> nymx05.mgw.rr.com.      1842    IN      A       24.92.226.17
> dns-pri-01.nyroc.rr.com. 3600   IN      A       24.92.226.100
> dns-sec-01.nyroc.rr.com. 3600   IN      A       24.92.226.240
> 
> ;; Query time: 475 msec
> ;; SERVER: 24.92.226.100#53(dns-pri-01.nyroc.rr.com)
> ;; WHEN: Wed Jul 21 12:45:45 2004
> ;; MSG SIZE  rcvd: 427
> 
> 
> 
> ~  They didn't know how long ago
> | it changed.
> 
> 
> It hasn't changed. The address isn't any good anymore, they
> need to update the zone for twcny.rr.com and remove that
> MX entry.
> 
> $ dig @dns-pri-01.nyroc.rr.com nycmx02.mgw.rr.com IN A
> 
> ; <<>> DiG 9.2.2 <<>> @dns-pri-01.nyroc.rr.com nycmx02.mgw.rr.com IN A
> ;; global options:  printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4531
> ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 4, ADDITIONAL: 0
> 
> ;; QUESTION SECTION:
> ;nycmx02.mgw.rr.com.            IN      A
> 
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