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NDR problems

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NDR problems - 29.Aug.2005 12:48:00 PM   


Posts: 16
Joined: 11.Aug.2005
From: Italy
Status: offline
I'm not receving NDR from outside my exchange organization
We have a smtp relay in DMZ that query the dns to send messages

I have tryed to send a message with an incorrect address the result it's
that the messages it's queued into the smtp relay...but it dos'nt send back the Ndr


Post #: 1
RE: NDR problems - 30.Aug.2005 4:49:00 AM   


Posts: 705
Joined: 3.May2005
From: Sweden
Status: offline
I think youŠve misunderstood this. NDR are sent from the receiving Exchange server if it canŠt find the user the mail is addressed to. If you try to send an e-mail with a domain address that doesnŠt exist there is no Exchange server to receive it and it will stay in your outgoing SMTP queue.

(in reply to zanottam)
Post #: 2
RE: NDR problems - 30.Aug.2005 9:10:00 AM   
If you have masquerade domain setup than disable it. This could be causing your NDR issues.


(in reply to zanottam)
  Post #: 3
RE: NDR problems - 30.Aug.2005 4:34:00 PM   


Posts: 124
Joined: 17.Sep.2004
From: Alabama
Status: offline
I have cone across a setup that until I configured "Send a copy of NDR's to:" on the Virtual SMTP server, some NDR's were not generated and sent to the user.

(in reply to zanottam)
Post #: 4
RE: NDR problems - 1.Sep.2005 5:17:00 AM   


Posts: 16
Joined: 11.Aug.2005
From: Italy
Status: offline
thanks to all for your replay..
I explain better my problem.
i have ech2003 that relay message to my trend smtp in DMZ.
When this smtp cannot send e message to somebody
it put the message in the bad queue and it try to send back a ndr message, with no success.
If i look the log i see this error message:
ERROR: SMTP Server looping occur

(in reply to zanottam)
Post #: 5

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