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Re: DNS problems with e-mail

From: Alan Ordway
Date: Monday, December 20, 2004
Time: 6:15:29 am

Here is another example from verizon.net. One name server resolves, but
the other doesn't???

hydra:~ aordway$ dig ihmc.us @ns1.verizon.net

; <<>> DiG 9.2.2 <<>> ihmc.us @ns1.verizon.net
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 15672
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 0

;; QUESTION SECTION:
;ihmc.us. IN A

;; ANSWER SECTION:
ihmc.us. 86023 IN A 65.212.118.136

;; AUTHORITY SECTION:
ihmc.us. 86023 IN NS ns2.ihmc.us.
ihmc.us. 86023 IN NS ns.ihmc.us.

;; Query time: 43 msec
;; SERVER: 199.45.32.40#53(ns1.verizon.net)
;; WHEN: Mon Dec 20 08:11:28 2004
;; MSG SIZE rcvd: 76

hydra:~ aordway$ dig ihmc.us @ns2.verizon.net

; <<>> DiG 9.2.2 <<>> ihmc.us @ns2.verizon.net
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 48421
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 13, ADDITIONAL: 0

;; QUESTION SECTION:
;ihmc.us. IN A

;; AUTHORITY SECTION:
. 3600000 IN NS D.ROOT-SERVERS.NET.
. 3600000 IN NS E.ROOT-SERVERS.NET.
. 3600000 IN NS F.ROOT-SERVERS.NET.
. 3600000 IN NS G.ROOT-SERVERS.NET.
. 3600000 IN NS H.ROOT-SERVERS.NET.
. 3600000 IN NS I.ROOT-SERVERS.NET.
. 3600000 IN NS J.ROOT-SERVERS.NET.
. 3600000 IN NS K.ROOT-SERVERS.NET.
. 3600000 IN NS L.ROOT-SERVERS.NET.
. 3600000 IN NS M.ROOT-SERVERS.NET.
. 3600000 IN NS A.ROOT-SERVERS.NET.
. 3600000 IN NS B.ROOT-SERVERS.NET.
. 3600000 IN NS C.ROOT-SERVERS.NET.

;; Query time: 50 msec
;; SERVER: 151.203.0.86#53(ns2.verizon.net)
;; WHEN: Mon Dec 20 08:11:17 2004
;; MSG SIZE rcvd: 236

--
Alan Ordway

On Dec 20, 2004, at 8:08 AM, Alan Ordway wrote:

> I seem to be having a problem with some e-mail servers rejecting mail
> from us because their mail server is saying domain not found. I am
> able to replicate the problem, but I don't know the cause. For example
> if I do a 'dig @ns.purdue.edu ihmc.us' I get
> ; <<>> DiG 9.2.2 <<>> @ns.purdue.edu ihmc.us
> ;; global options: printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 48922
> ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 13, ADDITIONAL: 1
>
> ;; QUESTION SECTION:
> ;ihmc.us. IN A
>
> ;; AUTHORITY SECTION:
> . 324791 IN NS H.ROOT-SERVERS.NET.
> . 324791 IN NS I.ROOT-SERVERS.NET.
> . 324791 IN NS J.ROOT-SERVERS.NET.
> . 324791 IN NS K.ROOT-SERVERS.NET.
> . 324791 IN NS L.ROOT-SERVERS.NET.
> . 324791 IN NS M.ROOT-SERVERS.NET.
> . 324791 IN NS A.ROOT-SERVERS.NET.
> . 324791 IN NS B.ROOT-SERVERS.NET.
> . 324791 IN NS C.ROOT-SERVERS.NET.
> . 324791 IN NS D.ROOT-SERVERS.NET.
> . 324791 IN NS E.ROOT-SERVERS.NET.
> . 324791 IN NS F.ROOT-SERVERS.NET.
> . 324791 IN NS G.ROOT-SERVERS.NET.
>
> ;; ADDITIONAL SECTION:
> J.ROOT-SERVERS.NET. 411191 IN A 192.58.128.30
>
> ;; Query time: 48 msec
> ;; SERVER: 128.210.11.5#53(ns.purdue.edu)
> ;; WHEN: Mon Dec 20 08:01:55 2004
> ;; MSG SIZE rcvd: 252
>
> However, if I do a
> dig @ns.purdue.edu ihmc.us +trace
>
> ; <<>> DiG 9.2.2 <<>> @ns.purdue.edu ihmc.us +trace
> ;; global options: printcmd
> . 324478 IN NS K.ROOT-SERVERS.NET.
> . 324478 IN NS L.ROOT-SERVERS.NET.
> . 324478 IN NS M.ROOT-SERVERS.NET.
> . 324478 IN NS A.ROOT-SERVERS.NET.
> . 324478 IN NS B.ROOT-SERVERS.NET.
> . 324478 IN NS C.ROOT-SERVERS.NET.
> . 324478 IN NS D.ROOT-SERVERS.NET.
> . 324478 IN NS E.ROOT-SERVERS.NET.
> . 324478 IN NS F.ROOT-SERVERS.NET.
> . 324478 IN NS G.ROOT-SERVERS.NET.
> . 324478 IN NS H.ROOT-SERVERS.NET.
> . 324478 IN NS I.ROOT-SERVERS.NET.
> . 324478 IN NS J.ROOT-SERVERS.NET.
> ;; Received 244 bytes from 128.210.11.5#53(ns.purdue.edu) in 46 ms
>
> us. 172800 IN NS a.gtld.biz.
> us. 172800 IN NS b.gtld.biz.
> us. 172800 IN NS c.gtld.biz.
> ;; Received 129 bytes from 193.0.14.129#53(K.ROOT-SERVERS.NET) in 116
> ms
>
> ihmc.us. 900 IN NS NS.ihmc.us.
> ihmc.us. 900 IN NS NS2.ihmc.us.
> ;; Received 92 bytes from 209.173.53.162#53(a.gtld.biz) in 44 ms
>
> ihmc.us. 86400 IN A 65.212.118.136
> ihmc.us. 86400 IN NS ns.ihmc.us.
> ihmc.us. 86400 IN NS ns2.ihmc.us.
> ;; Received 108 bytes from 65.212.118.10#53(NS.ihmc.us) in 1 ms
>
> I get our IP address. Any ideas?
> --
> Alan Ordway
> Florida Institute for Human & Machine Cognition
> 850-202-4455
--Apple-Mail-4-690808913



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