Delayed Delivery

Hi All

 I am getting a delayed delivery on emails to btinternet email addresses.

 below is the message. Please help..

 Delivery is delayed to these recipients or distribution lists:

 mike_moss@btinternet.com

 Subject: Test email from Joh at EFM

 This message has not yet been delivered. Microsoft Exchange will continue to try delivering the message on your behalf.
JohnLlewellynAsked:
Who is Participating?
 
Will SzymkowskiConnect With a Mentor Senior Solution ArchitectCommented:
Based on the error message in message tracking Exchange cannot process the message because you are getting a PTR record failure. If the external MX records does not have a corresponding Reverse DNS record (PTR) this would be the reason why you are not able to send to them.

I would check with the company the owns this domain to see if they have recently changed their DNS settings externally.

This also may be a case if they have no PTR records they could be blacklisted as well depending on how long this has been set without a PTR record.

Will.
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Will SzymkowskiSenior Solution ArchitectCommented:
In the queue viewer what do you see as an error message for message detail?

Will.
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JohnLlewellynAuthor Commented:
Hi Will

Thanks for looking at this, Is below the info you are after?

Exchange1.bmp
Identity: SERVER3\337445\3557377
Subject: RE: Dan's Stag weekend - Save the Date -
Internet Message ID: <48ADA28E27C20E4EB0F8D8F2C32A487B01B38F391046@SERVER3.EFM-WORLDWIDE.local>
From Address: Lisa.Ryan@efm-worldwide.com
Status: Ready
Size (KB): 21
Message Source Name: FromLocal
Source IP: 255.255.255.255
SCL: -1
Date Received: 02/02/2015 11:19:07
Expiration Time: 04/02/2015 11:19:07
Last Error: 400 4.4.7 Message delayed
Queue ID: SERVER3\337445
Recipients:  mike_moss@btinternet.com
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Will SzymkowskiSenior Solution ArchitectCommented:
Can you completely expand the Last Error column? If it is based on what i think follow the link below which will outline all of the steps required to correct this issue.

http://support.microsoft.com/kb/979175

Will.
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JohnLlewellynAuthor Commented:
Hi Will

Last Error Colum expanded.. :)

Exchange-2.png
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JohnLlewellynAuthor Commented:
I have looked on the Receive Connectors on the Exchange Management Console.

Exchange-3.png

The Default Server3 Exchange Server authentication was ticked but the Client Server3 was not. I have checked that for now.
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JohnLlewellynAuthor Commented:
Will, you are a Legend.
It turns out that our ISP had removed the Reverse DNS by mistake. They have redone it and now all seem peachy.
Thanks Mate.
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Will SzymkowskiSenior Solution ArchitectCommented:
Thanks!
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