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Exchange 2010 Host or domain name not found

I am getting the following error message when trying to send an email out to a specific sub domain. Primary domain works fine. But i am not able to send out an email to a sub domain. They are able to send us an email however fine.


#< #5.4.4 X-PGP-Universal; Host or domain name not found. Name service error for name=uhc.lgmc.com type=A: Host found but no data record of requested type> #SMTP#

Original message headers:

Received: from pgp.intalh.org (pgp.intalh.org [127.0.0.1])      by pgp.intalh.org
 (PGP Universal) with ESMTP id 3A34A191886E      for <someone@someone.com>; Fri,
 11 Apr 2014 09:12:37 -0500 (CDT)
Received: from AMUN.intalh.org ([192.168.1.71])  by pgp.intalh.org (PGP
 Universal service);  Fri, 11 Apr 2014 09:12:37 -0500
X-PGP-Universal: processed;
      by pgp.intalh.org on Fri, 11 Apr 2014 09:12:37 -0500
Received: from AMUN.intalh.org ([fe80::bc43:75b6:a230:dab7]) by
 AMUN.intalh.org ([fe80::bc43:75b6:a230:dab7%10]) with mapi; Fri, 11 Apr 2014
 09:13:13 -0500
From: Test<test@test.com>
To: "someone@someone.com" <someone@someone.com>
Subject: test
Thread-Topic: test
Thread-Index: Ac9VkCsOzL9lTVpvQVWaymSw3F03rA==
Date: Fri, 11 Apr 2014 14:13:11 +0000
Message-ID: <0332FAB8365A204188005AEE21E2B3F2011558@AMUN.intalh.org>
Accept-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
MIME-Version: 1.0
Content-Language: en-US
Content-Type: multipart/alternative;
      boundary="_000_0332FAB8365A204188005AEE21E2B3F2011558AMUNintalhorg_"
0
PainKiller89
Asked:
PainKiller89
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1 Solution
 
PainKiller89Author Commented:
I have tried sending an email from gmail it goes fine.
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Simon Butler (Sembee)ConsultantCommented:
The error that you have posted doesn't look like an Exchange error - so it is coming from something else. Do you route your email via a smart host?

Have you don't an nslookup on the sub domain to see if it has an MX record? As far as the internet is concerned blah.example.com and example.com are two different domains and require MX records in both zones.

The fact that it works in Gmail doesn't really matter because they are different MTAs and therefore will probably work in different ways.

Simon.
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PainKiller89Author Commented:
Hi,

Yes, We have our email going through Symantec PGP universal server for encryption purposes.

Here is the problem, we can send out emails to someone@lgmc.com and lgmc.com has two sub domains which are uhc.lgmc.com and smh.lgmc.com. We can not send out emails to uhc.lgmc.com but we can for smh and someone @lgmc.com.
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Simon Butler (Sembee)ConsultantCommented:
You need to check whether the domains in question have MX records. The fact that they are subdomains doesn't mean anything really - the sub domain zone will still require an MX record. There are loads of sites on the internet that can do that for you, as can nslookup on the server. However the problem is most likely with the PGP server - and that will probably require involvement of Symantec support - IF the DNS zones and MX records exist.

Simon.
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PainKiller89Author Commented:
Did a mxtoolbox check, they are routing through same SMTP address. Please advise.


MX Records
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Simon Butler (Sembee)ConsultantCommented:
You will need to speak to Symantec support then - as the problem is not with Exchange.
Exchange is handing the email to the appliance for delivery and that is where the problem is.

I am not familiar with that product, so cannot assist further.

Simon.
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PainKiller89Author Commented:
Strange, I went into pgp universal server network settings page, added two new 2008 DC's DNS servers and saved it. Now i am able to send out emails fine. Very very strange. Cause the other two DNS listed were 2003 Dc's.
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PainKiller89Author Commented:
Thank you for your help, really appreciate it.
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