Email sent to one particular domain is not received

Hi
My company has problems sending mail to one particular domain. When mail is sent to this domain, the sender gets the following message sent back to them:
This is an automatically generated Delivery Status Notification.

THIS IS A WARNING MESSAGE ONLY.
YOU DO NOT NEED TO RESEND YOUR MESSAGE.
Delivery to the following recipients has been delayed.

My company is using Ms Exchange 2003 sp2 and mail is sent outbound via a separate windows 2003 server running a IIS SMTP Virtual Server.

Upon reviewing the SMTP logs on the SMTP Virtual Server for the domain i am trying to send mail to they consist of the following entries which leads me to believe that the problem could be with the receiving mail server rejecting the mail because it does not like the BDAT command used by my Exchange server:
--0
EHLO-0
MAIL-0
RCPT-0
--0
BDAT-0

This i find strange as the BDAT command is only used when communication is with another Exchnage.

How someone please assist me in resolving this problem.
Regards
big
biggiesmallzzAsked:
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MesthaCommented:
Delay messages are close to useless.
The log doesn't tell you why the remote server is rejecting the message. If you telnet to the server on port 25 on the Exchange server and attempt to send an email, you may well see a failure code.

Simon.
0
biggiesmallzzAuthor Commented:
I have trying sending a message via telnet of which still does not work. No failure code is also generated.

Regards

big
0
MesthaCommented:
Your post doesn't provide any information of use.

What do you mean it doesn't work?
Does it connect? If not then either the remote site is rejecting your message or there is a routing problem.
Have you verified with the other side whether they are having email problems? It may well be something outside if your control.

If it connects, then it cannot fail without an error message if a connection . Either the message is rejected with an error, or it is accepted. If the message is being accepted then that would tend to indicate the email is being accepted and then dropped after delivery. However that would not match up with your original question.

You need to provide more information.

Simon.
0
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dreadman2kCommented:
You can also try using a tool called mailsend.exe ( http://www.muquit.com/muquit/software/mailsend/mailsend.html ) . This prompts you for each needed field to send a manual SMTP message, then sends it in one burst, avoiding a lot of typo problems when doing the telnet trick. Run it from your outbound SMTP server (assuming its Windows based.
Also run it with the -V switch (verbose) & you will see the responses at each step. Post the results here & someone should be able to help you interpret them.
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biggiesmallzzAuthor Commented:
The detail is as follows:

1.  When mail is sent to the doamin in question, the mail is not delivered. The mail referenced in my original posting is received.

2. When the mail is sent to the domain via telnet, a failure code is not generated.

will however try mailsend and report back.

regards

big
0
MesthaCommented:
If the message is delivered by telnet, then the remote site is accepting the email and then silently dropping it. Why that is, only they can tell you. No one else can.

Simon.
0

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biggiesmallzzAuthor Commented:
Is mailsend a virus. As it it is widely reported to be.

Regards

big
0
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