Steve Bertrand wrote:
Hi everyone,
We are experiencing an issue in regards to SMTP MTA relay responses
regarding 'no such user', and it *apparently* appears to be only
occurring when a particular site attempts to deliver email to us. Any
advice on how to further troubleshoot my issue would be greatly
appreciated.
Because I have been inundated with off-list replies, I'll post my
findings here.
First, a screen cap of me composing a message, in which two of the
addresses are easily identified as valid, and two are clearly not:
http://ibctech.ca/nanog_smtp/hotmail_compose.jpg
...when I sent it, I received thus:
http://ibctech.ca/nanog_smtp/hotmail_response.txt
So, we'll try it from a different server:
http://ibctech.ca/nanog_smtp/local_compose.jpg
...hmmm, I received the message at [EMAIL PROTECTED] (even though the To:
field was cropped out of the jpg) this time, and my server generated the
following....AFAICT, correct 551 error(s):
http://ibctech.ca/nanog_smtp/local_err.txt
I'm willing to provide any more documentation required in order to get
this issue sorted.
Thank you everyone, I truly appreciate it.
Steve
