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Connection Died. (#4.4.2)

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Connection Died. (#4.4.2) - 1.Jun.2007 11:43:57 AM

TCheck

Posts: 92
Joined: 16.Jan.2006
Status: offline

Hello Experts;

Last week we had a power outage for over 4 hours, which downed our servers and firewall. I had to re-set the firewall to an original configuration. Since then, a couple of people have informed me that some email is not coming through. I am sure that 90% of email is making it through, but 10% is not.
The senders that are geting NDR messages, are getting the following;

Connected to 64.122.XXX.XXX but connection died. (#4.4.2)

I am not sure if this is because of the firewall or what. Nothing has changed on the server.

Thanks again for any help offered.

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RE: Connection Died. (#4.4.2) - 1.Jun.2007 11:46:57 AM

uemurad

Posts: 8232
Joined: 7.Jan.2004
From: California, USA
Status: offline

quote:

Connected to 64.122.XXX.XXX but connection died. (#4.4.2)

Is that address your Exchange server, or some other system that fields the mail in front of Exchange? If that is your Exchange server, have you looked at your SMTP logs to see if it offers additional information about what is happening?

_____________________________

Regards,

Dean T. Uemura
Microsoft MVP - Exchange (2007-2011)
exchangeguy.blogspot.com
uemurad@yahoo.com

(in reply to TCheck)

Post #: 2

RE: Connection Died. (#4.4.2) - 1.Jun.2007 11:54:15 AM

TCheck

Posts: 92
Joined: 16.Jan.2006
Status: offline

Thanks again for your help.

The IP address is our IP. I did not have the SMTP logs enabled. Should I enable them?

(in reply to uemurad)

Post #: 3

RE: Connection Died. (#4.4.2) - 1.Jun.2007 12:01:06 PM

uemurad

Posts: 8232
Joined: 7.Jan.2004
From: California, USA
Status: offline

quote:

Should I enable them?

You may want to even if it's just long enough to sort the problem out. Is there any consistency to the messages that fail? For example, do messages from a particular domain always fail? It would make testing much easier.

_____________________________

Regards,

Dean T. Uemura
Microsoft MVP - Exchange (2007-2011)
exchangeguy.blogspot.com
uemurad@yahoo.com

(in reply to TCheck)

Post #: 4

RE: Connection Died. (#4.4.2) - 1.Jun.2007 12:22:01 PM

TCheck

Posts: 92
Joined: 16.Jan.2006
Status: offline

I have not found any consistency, and it has happened on 2 domain names (only sporadically) of the 5 that the Exchange server hosts. And as far as I know.

(in reply to uemurad)

Post #: 5

RE: Connection Died. (#4.4.2) - 1.Jun.2007 12:25:05 PM

TCheck

Posts: 92
Joined: 16.Jan.2006
Status: offline

The logs are starting to come in, is there any thing that I am looking for?

Here is a sample of what is coming in;

15:58:11 65.54.244.72 RCPT - 0
15:58:11 64.3.223.125 - - 0
15:58:11 64.3.223.125 QUIT - 0
15:58:11 207.109.18.196 - - 0
15:58:11 207.109.18.196 RSET - 0
15:58:12 64.3.223.125 - - 0
15:58:12 65.54.244.72 - - 0
15:58:12 65.54.244.72 RSET - 0
15:58:12 207.109.18.196 - - 0
15:58:12 207.109.18.196 QUIT - 0

(in reply to uemurad)

Post #: 6

RE: Connection Died. (#4.4.2) - 1.Jun.2007 1:40:26 PM

uemurad

Posts: 8232
Joined: 7.Jan.2004
From: California, USA
Status: offline

Not sure what your SMTP log is reporting. Those "zeroes" are troubling if they are reporting the return code issued by your server. Please read through this article. Some of the additional fields can be useful in troubleshooting.
http://www.msexchange.org/tutorials/Logging_the_SMTP_Service.html

_____________________________

Regards,

Dean T. Uemura
Microsoft MVP - Exchange (2007-2011)
exchangeguy.blogspot.com
uemurad@yahoo.com

(in reply to TCheck)

Post #: 7