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Various SMTP Protocol and Connection Manager errors Exchange 2003

I have an 2003 Exchange Server that is producing a bunch of errors and users are complaining about mail flow. I have MSTransport logging turned o. I am getting a lot of the following errors

Event Type:      Error
Event Source:      MSExchangeTransport
Event Category:      SMTP Protocol
Event ID:      7004
Date:            6/9/2006
Time:            2:35:08 PM
User:            N/A
Computer:      Exchange
Description:
This is an SMTP protocol error log for virtual server ID 3, connection #18. The remote host "66.94.88.146", responded to the SMTP command "xexch50" with "504 Need to authenticate first ". The full command sent was "XEXCH50 1968 2 ". This will probably cause the connection to fail.

Event Type:      Warning
Event Source:      MSExchangeTransport
Event Category:      Connection Manager
Event ID:      4000
Date:            6/9/2006
Time:            2:36:02 PM
User:            N/A
Computer:      Exchange
Description:
Message delivery to the remote domain 'allegrorealty.com' failed for the following reason: Unable to bind to the destination server in DNS.

Event Type:      Warning
Event Source:      MSExchangeTransport
Event Category:      Connection Manager
Event ID:      4006
Date:            6/9/2006
Time:            2:36:18 PM
User:            N/A
Computer:      Exchange
Description:
Message delivery to the host '63.97.14.14' failed while delivering to the remote domain 'bwcltd.com' for the following reason: The remote server did not respond to a connection attempt.

Any thoughts?

mass2612

Hi,

Check out these.

http://support.microsoft.com/?id=843106

http://support.microsoft.com/default.aspx?scid=kb;en-us;q290290

http://www.eventid.net/display.asp?eventid=4006&eventno=4317&source=smtpsvc&phase=1

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Sembee

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ClearBlueTechnologies

ASKER

THanks for the quick replies. I am not using a smart host.

I have requested RDNS setup from SBC and am waiting for this to be setup in order to move forward. I will let you know what happens after that.

Thanks!
Mike

ClearBlueTechnologies

ASKER

I have completed the DNS setup per Simons post and also reviewed the links from mass2612. I still have the 7004 errors showing up although not as many. All the posts I read relate to a multi exchange server environment and the communications between the Exchange servers. I realize that if I turn the logging down, these errors will go away but I am wondering if I should see any while is it turned up?

Thanks!

ClearBlueTechnologies

ASKER

Any other thoughts?

Sembee

You will always get those errors.
User mistype email addresses. If you turn up logging then you see everything that the server is doing - errors as well, even though those errors are part of the daily operations of an email server.

Simon.

ClearBlueTechnologies

ASKER

Simon - Thanks for the DNS setup directions. This made the biggest impact on the errors issue. I turned down the logging now that most of the problems seemed to have subsided.

Thanks,
Mike