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:

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

JohnLlewellynAuthor Commented:
Hi Will

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

Identity: SERVER3\337445\3557377
Subject: RE: Dan's Stag weekend - Save the Date -
Internet Message ID: <48ADA28E27C20E4EB0F8D8F2C32A487B01B38F391046@SERVER3.EFM-WORLDWIDE.local>
From Address:
Status: Ready
Size (KB): 21
Message Source Name: FromLocal
Source IP:
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
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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.

JohnLlewellynAuthor Commented:
Hi Will

Last Error Colum expanded.. :)

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


The Default Server3 Exchange Server authentication was ticked but the Client Server3 was not. I have checked that for now.
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.
Will SzymkowskiSenior Solution ArchitectCommented:
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