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Re: warning: Unable to look up NS host

From: Evan Platt (evanespphotography.com)
Date: Wed Aug 02 2006 - 17:16:45 CDT


At 03:09 PM 8/2/2006, you wrote:
>I am getting this error and I'm not sure what is means.
>
>Aug 2 05:08:32 mg-v1 postfix-gw/smtpd[28688]: connect from
>news.ecpsourcebuys.com[205.177.90.167]
>Aug 2 05:08:33 mg-v1 postfix-gw/smtpd[28688]: warning: Unable to
>look up NS host NS2.ECPSRCEDNS.com for Sender address
>CruiseDirectorecpsourcebuys.com: hostname nor servname provided, or not known
>Aug 2 05:08:33 mg-v1 postfix-gw/smtpd[28688]: warning: Unable to
>look up NS host NS1.ECPSRCEDNS.com for Sender address
>CruiseDirectorecpsourcebuys.com: hostname nor servname provided, or not known
>Aug 2 05:08:33 mg-v1 postfix-gw/cleanup[28693]: A2F23C0F7:
>message-id=<20060802100833.A2F23C0F7mg-v2.leaveittobeaver.net>
>Aug 2 05:08:33 mg-v1 postfix-gw/qmgr[28511]: A2F23C0F7:
>from=<sav-postmasterleaveittobeaver.net>, size=287, nrcpt=1 (queue active)
>Aug 2 05:08:34 mg-v1 postfix-gw/smtp[28699]: A2F23C0F7:
>to=<CruiseDirectorecpsourcebuys.com>,
>relay=news.ecpsourcebuys.com[205.177.90.167]:25, delay=0.48,
>delays=0.03/0.23/0.17/0.05, dsn=2.0.0, status=deliverable (250 Ok)
>Aug 2 05:08:34 mg-v1 postfix-gw/qmgr[28511]: A2F23C0F7: removed
>Aug 2 05:08:36 mg-v1 postfix-gw/smtpd[28688]: NOQUEUE: reject: RCPT
>from news.ecpsourcebuys.com[205.177.90.167]: 450 4.7.1
><removedexample.net>: Recipient address rejected: Policy Rejection-
>Please try later.; from=<CruiseDirectorecpsourcebuys.com>
>to=<removedexample.net> proto=ESMTP helo=<news.ecpsourcebuys.com>
>Aug 2 05:08:36 mg-v1 postfix-gw/smtpd[28688]: disconnect from
>news.ecpsourcebuys.com[205.177.90.167]
>
>It has MX records and passes my SAV check. I understand it's a
>warning but would like to understand what it's telling me.

I could be wrong, but..

# nslookup ecpsourcebuys.com
Server: 192.168.1.66
Address: 192.168.1.66#53

Non-authoritative answer:
*** Can't find ecpsourcebuys.com: No answer

# dig mx ecpsourcebuys.com

; <<>> DiG 9.3.1 <<>> mx ecpsourcebuys.com
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 10357
;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 2, ADDITIONAL: 4

;; QUESTION SECTION:
;ecpsourcebuys.com. IN MX

;; ANSWER SECTION:
ecpsourcebuys.com. 7062 IN MX 10 rss.ecpsourcebuys.com.
ecpsourcebuys.com. 7062 IN MX 10 news.ecpsourcebuys.com.
ecpsourcebuys.com. 7062 IN MX 10 groups.ecpsourcebuys.com.
ecpsourcebuys.com. 7062 IN MX 10 orders.ecpsourcebuys.com.

I don't know if it's 'valid' to have all the mx records have the same
priority. Don't know if that's a problem or the problem.