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Emails are not getting through (Permanent Failure: No account by that name here)

Posted on 2007-11-28
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Last Modified: 2008-03-06
We have a customer who cannot email to a specific user in our network. Other outside accounts and internal users can email him fine.

Our internal user has an active directory account by his first initial and last name @OUR DOMAIN.com. A long time ago he got a lot of spam, so his email address was changed to just his last name@OUR DOMAIN.com, but his username stayed the same. that is the only thing I know that is different than other users on our network.

This is the message returned to the customer when emailing this internal user:
===========
> This is the email server for the (OUR DOMAIN) domain.

> I'm sorry to have to inform you that the message returned
> below could not be delivered to one or more destinations.

> <(EMAIL WAS HERE)>: Permanent Failure: No account by that name here
==========

How can I troubleshoot or solve this issue?
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Question by:TrinityAssembly
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6 Comments
 
LVL 104

Expert Comment

by:Sembee
ID: 20369574
That is not an Exchange message.
Does your email come through another server or service?

Simon.
0
 

Author Comment

by:TrinityAssembly
ID: 20374213
no. it should come straight to our exchange box.
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LVL 104

Expert Comment

by:Sembee
ID: 20374999
Where do your MX records point? Just to your Exchange server or to another server somewhere - ISP perhaps? Anything between Exchange and the internet? As I wrote above, that isn't an Exchange message, so it is coming from something else.

Simon.
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Author Comment

by:TrinityAssembly
ID: 20381814
We have two external facing DNS servers inside our network that points to our Exchange server which is also a public facing server inside our network. They are all on public ip addresses.

I believe you when you say that's not an exchange message. Any ideas on what I could do find out what's really going on?
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LVL 104

Accepted Solution

by:
Sembee earned 2000 total points
ID: 20381950
You have to know what server is generating the message. The only way that can be diagnosed is from the recipient's side. If they are routing email out through their ISPs server though then you can do very little.

Do the MX records point exclusively to Exchange? Does Exchange answer incoming SMTP email, or does something else?

From outside, if you telnet to port 25 of your MX records do you get something like this:

220 mail.domain.net Microsoft ESMTP MAIL Service, Version: 6.0.3790.3959 ready at
  Fri, 30 Nov 2007 14:06:07 +0000

If you don't, then it is not Exchange answering the email.

Simon.
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Author Comment

by:TrinityAssembly
ID: 20382770
yeah, i guess its gotta be on their site somehow. This one external person is the only person we have problems with
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