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Why would the connection be dropped? &nbsp;Any ideas? &nbsp;Configuration issue on mail server itself?
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Why would the connection be dropped?  Any ideas?  Configuration issue on mail server itself?

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Some router/firewalls filter SMTP traffic in an atempt to protect the mail server. This should not cause the connection to drop. You can eliminate a configuration issue on the mail server by performing step 2 in my previous post.
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Some router/firewalls filter SMTP traffic in an atempt to protect the mail server. This should not cause the connection to drop. You can eliminate a configuration issue on the mail server by performing step 2 in my previous post.

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It seems it was a realing issue. &nbsp;Added IP of mail server and all is OK...
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It seems it was a realing issue.  Added IP of mail server and all is OK...

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Realing? Do you mean Network Address Translation?
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Realing? Do you mean Network Address Translation?

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Relaying, sorry for the typo.
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Here is the deal. &nbsp;We implemented an Exchange 2003 server over the weekend. &nbsp;We moved from POP mail to Exchange. &nbsp;Over the weekend, it seemed that incoming and outgoing mail was fine. &nbsp;Last night I realized all incoming and outgoing mail had stopped. &nbsp;I added a smarthost and now all outgoing mail stuck in the queue has sent, so that issue seems to be resolved. &nbsp;However, still no incoming mail. &nbsp;I have a Linksys Router with Port 25 forward to Mail server. &nbsp;Public IP address is: 68.195.87.159. &nbsp;I can telnet to port 25 from outside. &nbsp;<br />
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This is a very urgent issue, any help is much appreciated.<br />
Thanks.
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Here is the deal.  We implemented an Exchange 2003 server over the weekend.  We moved from POP mail to Exchange.  Over the weekend, it seemed that incoming and outgoing mail was fine.  Last night I realized all incoming and outgoing mail had stopped.  I added a smarthost and now all outgoing mail stuck in the queue has sent, so that issue seems to be resolved.  However, still no incoming mail.  I have a Linksys Router with Port 25 forward to Mail server.  Public IP address is: 68.195.87.159.  I can telnet to port 25 from outside.  

This is a very urgent issue, any help is much appreciated.
Thanks.

New Exchange 2003 Server not receiving Email

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.