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pcdf -> Outgoing SMTP error: NDR 5.3.5 (29.Nov.2007 11:20:40 AM)
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Hi there,
I've just uninstalled Trend Micro VirusWall which used to scan port 25 and redirect everything to port 6000 for exchange to pick it up.
After having uninstalled it I set Exchange listening port back to 25 and we can receive email alright. However when we try to send external emails we get the following error:
This is an automatically generated Delivery Status Notification.
Delivery to the following recipients failed.
sender@domain.co.uk
Reporting-MTA: dns;domain.co.uk
Received-From-MTA: dns;[xxx.x.x.x]
Arrival-Date: Thu, 29 Nov 2007 16:01:59 +0000
Final-Recipient: rfc822;sender@domain.co.uk
Action: failed
Status: 5.3.5
I've looked this up and it's apparently looping back to itself.
I've tried deleting the SMTP connector as suggested in http://support.microsoft.com/default.aspx?scid=kb;en-us;316617 but it's not worked. I've only got one virtual SMTP server so port sharing shouldn't be an issue...
Can anyone help? Any ideas would be most appreciated?
BTW, I use Windows server 2000 and Exchange 2000.
Thanks in advance.
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