NDR messages going straight to Badmail
Ross Levis
I've got IIS6 SMTP server running on Server 2008 machine. It's working well
for relaying my emails from my remote location. However, if I send an email
to a non-existing email address, I'm not receiving the NDR back. I
discovered these are going straight to the badmail folder.
The strange thing is I can remove the .bad extension and move it to the
Pickup folder and it gets delivered to me as it should! Here are the first
few lines of the .BAD file.
From: postm...@smtp.mydomain.com
To: ro...@mydomain.com
Date: Wed, 12 May 2010 15:15:38 +0200
etc
The .BDR file looks like this....
---------------------
Unable to deliver this message because the follow error was encountered:
"This message is a delivery status notification that cannot be delivered.".
The specific error code was 0xC00402C7.
The message sender was <>.
The message was intended for the following recipients.
ro...@mydomain.com
------------------
smtp.mydomain.com is the fully qualified name. I've got a DNS record
pointing to it. My MX / receiving mail server for mydomain.com is hosted
elsewhere.
If I send an email to myself through this server, it is delivered to me
fine. It's only the NDR's that the server tries to send to me that are not
getting out.
In the SMTP server config on the Messages tab, I entered another email
address using the same domain into the "Send copy of NDR to" setting. This
is also not delivered. However, if I change this to my private gmail
account, I do get an NDR sent to this address.
So basically the server is having trouble sending NDR messages to my domain.
It sounds initially like a DNS issue of some kind, perhaps thinking that
mydomain.com is local, but that wouldn't explain why emails to myself work,
and why moving the .bad file to the Pickup folder sends it perfectly well.
Can anyone tell me what is going on?
Thanks.
Sanford Whiteman
-- Sandy