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SMTP Relay problems

Posted on 2008-06-23
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Last Modified: 2013-11-30
I'm having an SMTP relay problem and I'm at I'm about at my wits end.  This is a fairly simple (and small) setup.  All the Exchange 2007 roles are on one box.  There is a firewall, but I've blown the necessary ports open, and as you can see by the following exchange 2007 server log the connection is being made.  I have tried several things including now using IP addys instead of domain names, and changing the timeout from 10 to 15 minutes.  Please note I've filtered the IP addy and e-mail addy on this log:

2008-06-23T20:59:30.435Z,MAILSERVER\SMTP RELAY,08CAA34AF867949E,0,10 NET MS:25,10 NET CLIENT:3406,+,,
2008-06-23T20:59:30.435Z,MAILSERVER\SMTP RELAY,08CAA34AF867949E,1,10 NET MS:25,10 NET CLIENT:3406,*,SMTPSubmit SMTPAcceptAnyRecipient SMTPAcceptAnySender SMTPAcceptAuthoritativeDomainSender AcceptRoutingHeaders,Set Session Permissions
2008-06-23T20:59:30.435Z,MAILSERVER\SMTP RELAY,08CAA34AF867949E,2,10 NET MS:25,10 NET CLIENT:3406,>,220 SMTP Relay - All connections are logged,
2008-06-23T20:59:30.435Z,MAILSERVER\SMTP RELAY,08CAA34AF867949E,3,10 NET MS:25,10 NET CLIENT:3406,<,XXXX 10 NET CLIENT,
2008-06-23T20:59:35.451Z,MAILSERVER\SMTP RELAY,08CAA34AF867949E,4,10 NET MS:25,10 NET CLIENT:3406,>,500 5.3.3 Unrecognized command,
2008-06-23T20:59:35.451Z,MAILSERVER\SMTP RELAY,08CAA34AF867949E,5,10 NET MS:25,10 NET CLIENT:3406,<,HELO 10 NET CLIENT,
2008-06-23T20:59:35.451Z,MAILSERVER\SMTP RELAY,08CAA34AF867949E,6,10 NET MS:25,10 NET CLIENT:3406,>,250 MAILSERVER Hello [10 NET CLIENT],
2008-06-23T20:59:35.451Z,MAILSERVER\SMTP RELAY,08CAA34AF867949E,7,10 NET MS:25,10 NET CLIENT:3406,<,MAIL FROM:<McAfeeAlert@DOMAIN>,
2008-06-23T20:59:35.451Z,MAILSERVER\SMTP RELAY,08CAA34AF867949E,8,10 NET MS:25,10 NET CLIENT:3406,*,08CAA34AF867949E;2008-06-23T20:59:30.435Z;1,receiving message
2008-06-23T20:59:35.451Z,MAILSERVER\SMTP RELAY,08CAA34AF867949E,9,10 NET MS:25,10 NET CLIENT:3406,>,250 2.1.0 Sender OK,
2008-06-23T20:59:35.451Z,MAILSERVER\SMTP RELAY,08CAA34AF867949E,10,10 NET MS:25,10 NET CLIENT:3406,<,RCPT TO:<ADMIN@DOMAIN>,
2008-06-23T20:59:35.451Z,MAILSERVER\SMTP RELAY,08CAA34AF867949E,11,10 NET MS:25,10 NET CLIENT:3406,>,250 2.1.5 Recipient OK,
2008-06-23T20:59:58.311Z,MAILSERVER\SMTP RELAY,08CAA34AF867949E,12,10 NET MS:25,10 NET CLIENT:3406,>,451 4.7.0 Timeout waiting for client input,
2008-06-23T20:59:58.311Z,MAILSERVER\SMTP RELAY,08CAA34AF867949E,13,10 NET MS:25,10 NET CLIENT:3406,-,,Local
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Question by:notarebel
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6 Comments
 
LVL 16

Expert Comment

by:Carol Chisholm
ID: 21853039
What is the problem? Are you relaying too much mail, or not enough?
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LVL 10

Expert Comment

by:uid94130
ID: 21853147
Do you have a Intrusion Prevention System in place?
It might falsely identify the traffic from your exchange server as unsafe. In this case you should check for an update for this system.
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Author Comment

by:notarebel
ID: 21857201
No IPS in place.  As you can see I just simply get a timeout and this happens from every device I've attempted so far.
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LVL 16

Expert Comment

by:Carol Chisholm
ID: 21857407
Have you allowed acces to your SMTP conenctor?

To receive at the command prompt:
set-ReceiveConnector -identity "Name of Default Connector" -PermissionGroups AnonymousUsers

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Author Comment

by:notarebel
ID: 21858028
I have allowed anonymous access to the connector.  You can see that initial connectivity is made to the server it just times out.  I also tried a telnet on port 25, and i get the 220, but no feedback on a ehlo, helo, or rset command and then it eventually times out.  
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Accepted Solution

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notarebel earned 0 total points
ID: 21891729
No comments have helped.  Cancelling membership
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