<div>
Check out this<br />
<a href="http://simultaneouspancakes.com/Lessons/2009/04/09/troubleshooting-delayed-message-delivery-in-exchange/" rel="ugc">http://simultaneouspancakes.com/Lessons/2009/04/09/troubleshooting-delayed-message-delivery-in-exchange/</a>
</div>


Check out this
http://simultaneouspancakes.com/Lessons/2009/04/09/troubleshooting-delayed-message-delivery-in-exchange/ [http://simultaneouspancakes.com/Lessons/2009/04/09/troubleshooting-delayed-message-delivery-in-exchange/]

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our ISP had blocked traffic on port 25. using a smart host rectified this issue.
</div>


our ISP had blocked traffic on port 25. using a smart host rectified this issue.

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<div class="content wysiwyg-content">
Hi All, <br />
<br />
I am in need of some urgent and desperate help with this one. For some unknown reason we are receiving Delivery delayed email responses when attempting to send external mail. <br />
<br />
Nothing at this has changed and I have ensured that our domain is not blacklisted, which it is not. So I am not sure what to do here. <br />
<br />
Any suggestions and advise would be greatly appreciated. <br />
<br />
Thanks<br />
Adrian
</div>
</div>


Hi All, 

I am in need of some urgent and desperate help with this one. For some unknown reason we are receiving Delivery delayed email responses when attempting to send external mail. 

Nothing at this has changed and I have ensured that our domain is not blacklisted, which it is not. So I am not sure what to do here. 

Any suggestions and advise would be greatly appreciated. 

Thanks
Adrian

Exchange 2010 delivery delay

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

Windows Server 2008 and Windows Server 2008 R2, based on the Microsoft Vista codebase, is the last 32-bit server operating system released by Microsoft. It has a number of versions, including including Foundation, Standard, Enterprise, Datacenter, Web, HPC Server, Itanium and Storage; new features included server core installation and Hyper-V.

Windows Server 2008

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture. A MTA implements both the client (sending) and server (receiving) portions of the Simple Mail Transfer Protocol (SMTP). The terms mail server, mail exchanger, and MX host may also refer to a computer performing the MTA function. The Domain Name System (DNS) associates a mail server to a domain with mail exchanger (MX) resource records containing the domain name of a host providing MTA services.