E-mail delayed to specific domain

[Enkrypted]

I received a Delivery Status Notification (Delay) last week. I have been trying to research where the problem lies, but have had no luck so I am turning to you good people for help. For some reason, I cannot send e-mail to anyone from this specific domain without it returning this message. I have not installed any programs or changed any settings that will disallow e-mail to go through, although I can receive mail from them with no issues.

All other e-mail works flawless, except for this one domain. I've checked my spam filters to make sure they didn't get added to any blacklist or exclusion lists. I have added them to all whitelists and IMF exceptions I could find.

I can send them e-mails from other accounts (such as my yahoo with no issues) and their IT department says that everything on their side is good and there should be no problem.

I am at a loss as to why I cannot send them mail. Any help is appreciated. TIA!

Enkrypted
A+

 

[bobsa32]

Can you post the NDR you get back, this will help diagnose the problem.

Bobby

 

[Enkrypted]

Here are some of the kickbacks I am getting:

This is an automatically generated Delivery Status Notification.

THIS IS A WARNING MESSAGE ONLY.

YOU DO NOT NEED TO RESEND YOUR MESSAGE.

Delivery to the following recipients has been delayed

Reporting-MTA: dns;sharperimpressionspainting.com

Final-Recipient: rfc822;recipient@domain.com
Action: delayed
Status: 4.4.7
Will-Retry-Until: Wed, 1 Apr 2009 15:36:14 -0400
X-Display-Name: 'Recipient Name'

Microsoft Mail Internet Headers Version 2.0
From: postmaster@sharperimpressionspainting.com
To: mcordi@sharperimpressionspainting.com
Date: Mon, 23 Mar 2009 21:01:59 -0400
MIME-Version: 1.0
Content-Type: multipart/report; report-type=delivery-status;
boundary="9B095B5ADSN=_01C992A6486A0E4A000051F0sharperimpressio"
X-DSNContext: 7ce717b1 - 1418 - 00000004 - C00402D1
Message-ID: <FRaqbC8wS00000043@sharperimpressionspainting.com>
Subject: Delivery Status Notification (Delay)

--9B095B5ADSN=_01C992A6486A0E4A000051F0sharperimpressio
Content-Type: text/plain; charset=unicode-1-1-utf-7

--9B095B5ADSN=_01C992A6486A0E4A000051F0sharperimpressio
Content-Type: message/delivery-status

--9B095B5ADSN=_01C992A6486A0E4A000051F0sharperimpressio
Content-Type: message/rfc822

X-MimeOLE: Produced By Microsoft Exchange V6.5
Content-class: urn:content-classes:message
MIME-Version: 1.0
Content-Type: multipart/alternative;
boundary="----_=_NextPart_001_01C9ABB6.D9390F5A"
Subject: Caller ID
Date: Mon, 23 Mar 2009 08:56:57 -0400
Message-ID: <5F21F9DED34E5D4082727335F3DD81D99D421B@server.
sharperimpressionspainting.local>
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
Thread-Topic: Caller ID
Thread-Index: Acmrttj+/k8br/c4SX+nA4A+YNf9Hw==
From: "Mike Cordi" <mcordi@sharperimpressionspainting.com>
To: "Recipient Name" <recipient@domain.com>

------_=_NextPart_001_01C9ABB6.D9390F5A
Content-Type: text/plain;
charset="us-ascii"
Content-Transfer-Encoding: quoted-printable

------_=_NextPart_001_01C9ABB6.D9390F5A
Content-Type: text/html;
charset="us-ascii"
Content-Transfer-Encoding: quoted-printable


------_=_NextPart_001_01C9ABB6.D9390F5A--

--9B095B5ADSN=_01C992A6486A0E4A000051F0sharperimpressio--

Enkrypted
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[noveyron]

Do you have a reverse DNS record?

http://postmaster.aol.com/tools/rdns.html

 

[Enkrypted]

Yes I have reverse DNS setup and there hasn't been any changes made to any settings that would affect Exchange communication. Everything was working great and then one day it just stopped sending to that particular domain.

Enkrypted
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[58sniper]

From the server, do an NSLOOKUP for the domain and get the MX record. Then telnet to the IP of the MX record and see if you can send a test message.

Pat Richard MVP
Plan for performance, and capacity takes care of itself. Plan for capacity, and suffer poor performance.

http://www.ucblogs.net/blogs/exchange/

 

[Enkrypted]

I did an NSLOOKUP for the domain and tried to telnet to both IP and Nameserver. It doesn't connect to either of them.

Enkrypted
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[58sniper]

Were you trying over port 25? Trying to connect to the nameservers doesn't solve anything. Try connecting to the IP address listed for the MX record, using port 25.

Pat Richard MVP
Plan for performance, and capacity takes care of itself. Plan for capacity, and suffer poor performance.

http://www.ucblogs.net/blogs/exchange/

 

[Enkrypted]

Ok, one of the other admins was working on something which was why my telnet did not properly work earlier.

I sent the message through telnet again and the person did receive it.

Enkrypted
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[pasupport]

Have you tried setting up a smart host for that domain to see if the mail is still delayed? It's possible that they have an over aggressive spam filter.


--
Visit my website site a pasupportsolutions.com for cool tips and tricks

 

[Enkrypted]

I don't think it would be their spam filter. They received the messages I send through TELNET, but anything else sent through Outlook, etc gets delayed.

Enkrypted
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[58sniper]

What's the host name that's being presented in your SMTP connector? Make sure that's publicly available.

It could very well be a spam filter.

Pat Richard MVP
Plan for performance, and capacity takes care of itself. Plan for capacity, and suffer poor performance.

http://www.ucblogs.net/blogs/exchange/

 

[Enkrypted]

Are you referring to the hostname on the Address tab?

Enkrypted
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[Enkrypted]

I managed to get the information you wanted. Here are the tabs of the SMTP connector:

Let me know if anything looks out of place. Thanks for everyone's help on this too!

Enkrypted
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[58sniper]

Servers>[server]>Protocols>SMTP>Default SMTP Virtual Server>Properties>Delivery>Advanced>Fully-qualified domain name

Pat Richard MVP
Plan for performance, and capacity takes care of itself. Plan for capacity, and suffer poor performance.

http://www.ucblogs.net/blogs/exchange/

 

[Enkrypted]

It's listed as sharperimpressionspainting.com

Selecting the DNS button says it is valid.

Enkrypted
A+

 

[Enkrypted]

Anything ideas on what could be causing this? Everything I have checked seems alright.

Enkrypted
A+