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Cannot send email. Error 4.4.7

We have a windows server 2000. Sometimes we receive 4.4.7 smtp errors. Last error was when trying to send an email to xxxxx@colglazier.com. I noticed something weird is happening:If I ping the mail server from our server it goes to a ip which does not corresponds to colglazier. So it looks like it is redirecting it to another site and therefore I receive the 4.4.7 error and can't send the email. Do you have any idea why this is happenning?
Thanks in advance!
Nancy Villa
Nancy Villa
1 Solution
Serena HsiMarketing ConsultantCommented:
Numeric Code: 4.4.7

Possible Cause: The message in the queue has expired. The sending server tried to relay or deliver the message, but the action was not completed before the message expiration time occurred. This NDR may also indicate that a message header limit has been reached on a remote server or that some other protocol timeout occurred during communication with the remote server.

Troubleshooting: This code typically indicates an issue on the receiving server. Verify the validity of the recipient address, and verify that the receiving server is configured to receive messages correctly. You may have to reduce the number of recipients in the header of the message for the host that you are receiving this NDR from. If you resend the message, it is placed in the queue again. If the receiving server is on line, the message is delivered.


Also, the recipient email server could have flagged you as a spam site.


To do an SMTP telnet test:
Nancy VillaDirector of ITAuthor Commented:
We had a wrong secondary dns forwarder, once that was correct, the emails went through.  Also someone had set the time out to 2 minutes instead of 2 days.

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