smtp Email rejected from direct connections

Tech-Archive recommends: Repair Windows Errors & Optimize Windows Performance

From: lifeboy (rohan_at_teradiant.com)
Date: 03/09/04 

Date: Tue, 9 Mar 2004 11:06:16 -0800

I am running Exchange 2000 server on W2k server with SP4 . My server is Not acting as SMTP relay .

Problem : To some of the domains if i send e-mails, i get the following error mssg
.If i send the same message through hotmail or yahoo , it goes through.

--------------------------------------------------------------------------------------
Your message did not reach some or all of the intended recipients.

      Subject: Testing
      Sent: 3/9/2004 10:12 AM

The following recipient(s) could not be reached:

      user1@otherusercompany.com on 3/9/2004 10:13 AM

            The e-mail system was unable to deliver the message, but did not report a specific reason. Check the address and try again. If it still fails, contact your system administrator.

            <MAIL.mycompany.com #5.0.0 smtp;550 5.0.0 E-mail rejected from direct connections from dsl.cnc.net clients - use your ISP SMTP server>

--------------------------------------------------------------------------------------------------------------------------------------

If i check the event log (Application Log) on the exchange server , there is no log related to the above NDR

Also , when i track the Email through ExcahngeSystem Manager ---> Message Traccking Center ----->

I see the following log :

3/9/2004 10:12 AM SMTP Store Driver : Message Submitted From Store

3/9/2004 10:12 AM SMTP:Message Submitted to Advanced Queuing

3/9/2004 10:12 AM SMTP: Started Message Submission to advanced Queue

3/9/2004 10:12 AM SMTP : Started Outbound Transfer of Message

3/9/2004 10:12 AM SMTP : Non-Delivery Report ( NDR) Generated

-------------------------------------------------------------------------------------

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