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Bounce Back and then Denied Send betweeen Exchange 2010 and Chinese Email Server (I believe a TEAMWare Server by Fujitsu)

Posted on 2011-09-13
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1,238 Views
Last Modified: 2012-05-12
Below is the error.  It looks like the receiving server tried to do a reverse lookup and it failed for some reason.  Haven't received any problems with this domestically and we've been on Exchange 2010 (from Exchange 2003) for about 6 months now.  I'm wondering if that is because most companies don't do reverse lookups in email or is it because of some incompatibility between Exchange and whatever server type their using?  They are in China, could it be the Chinese Great Firewall?  Is there any 3rd party or integrated tool or website to which I can go and test HELO/EHLO lookups to make sure that my server is responding properly to them?



Winmail rejected your message to the following e-mail addresses:

Jerry Huo (huojun@chinesecompany.com)


Winmail gave this error:
refused, 'helo'/'ehlo' hostname(AGCV10k.company.lcl) is not match with the IP(X.X.X.X)


A problem occurred during the delivery of this message to this e-mail address. Try sending this message again. If the problem continues, please contact your helpdesk.








Diagnostic information for administrators:

Generating server: AGCV10K.company.lcl

huojun@chinesecompany.com
Winmail #554 refused, 'helo'/'ehlo' hostname(AGCV10k.company.lcl) is not match with the IP(X.X.X.X) ##

Original message headers:

Received: from AGCV13K.company.lcl ([fe80::c893:80f1:4d72:fab9]) by
 AGCV10k.company.lcl ([169.254.1.186]) with mapi id 14.01.0323.003; Mon, 12 Sep
 2011 16:15:34 -0700
From: John Smith<john.smith@company-global.com>
To: Jerry Huo <huojun@chinesecompany.com>
Subject: RE: Re: RE: Fw: Devkit8500A -- linux/tools files missing on the CD
Thread-Topic: Re: RE: Fw: Devkit8500A -- linux/tools files missing on the CD
Thread-Index: AQHMZvd6kVdI2g9qh0OhQcBQCTbgqpVKdT6g
Date: Mon, 12 Sep 2011 23:15:33 +0000
Message-ID: <508662CF88940C4CA1A660BA54E9C8C12230FC@agcv13k.company.lcl>
References: <201107221809370621090@chinesecompany.com>,
 <508662CF88940C4CA1A660BA54E9C8C16218@AGCV10k.company.lcl>,
 <201108020851273437626@chinesecompany.com>, <201108021730099849991@chinesecompany.com>
 <201108301729522574516@chinesecompany.com>
In-Reply-To: <201108301729522574516@chinesecompany.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach: yes
X-MS-TNEF-Correlator:
x-originating-ip: [10.10.4.75]
Content-Type: multipart/mixed;
      boundary="_008_508662CF88940C4CA1A660BA54E9C8C12230FCagcv13kcompanylcl_"
MIME-Version: 1.0
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Question by:ChocolateRain
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LVL 4

Accepted Solution

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krf1963 earned 2000 total points
ID: 36531985
I think you're right - the mail server in China is doing a reverse lookup of your server IP address and rejecting the connection because either it doesn't exist or there is a mismatch between the record and your server name.

You should be able to contact your ISP and ask them to set up the required PTR record (I'm assuming it doesn't exist).

If you want to check this, you can use the tools at www.iptools.com to check - simply do a PTR lookup from the 'DNS lookup' tool.
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LVL 1

Author Comment

by:ChocolateRain
ID: 36532048
Just realized another problem.

Our email domain is 'company-global.com' while our internal domain name is 'company.lcl'.

How can I rectify having an Internet facing server that is in a '.lcl' namespace?  How can they reverse lookup my server when the 'company.lcl' isn't a valid internet facing domain name?
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LVL 4

Assisted Solution

by:krf1963
krf1963 earned 2000 total points
ID: 36532299
In Exchange 2010, you can change the HELO message that is sent by the mail server to the publicly visible FQDN. This is done on the properties of the SMTP service.

In the Hub Transport section of the Organization configuration, you should be able to see you connector to the Internet in the 'Send Connectors' tab. In the properties of this connector, you can customize the HELO message.

Hope this helps.
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