Question : Communigate Pro bounce back "The message was not delivered because the return address was refused"

I have a client which uses Communigate Pro for their email.  

One of the users cannot send mail internally and receives the bounce back message

 "This message was undeliverable due to the following reason: Your message was not deleivered because the return address was refused."  The return address was "<[email protected]>"


The user can send/receive to external email addresses and can receive email from internal addresses.

I went through the user's account on the interface but am really not familiar with Communigates.  There was nothing that stood out so hopefully someone could point me in the right direction.

Thoughts?

Answer : Communigate Pro bounce back "The message was not delivered because the return address was refused"

If it only impacts internal e-mail, and if the mail server is at the client site, I don't see how the ISP could be the issue.

If the above is correct, I think you need to look at the Communigate server itself.  

May I assume that the mail server has been cold booted as a diagnostic for this problem?  If not, do so and test again.

I wonder if the mail database on the server has a corruption?  Could the configuration for that user be corrupt?

If the user uses a mail client with the e-mail stored on his computer or a file server (as opposed to just within the mail server's database), one thing to try might be the following:

1. Have the user check his e-mail clearing the mail server of any messages. 
2. Have the user exit his mail client. 
3. Delete the user account from Communigate. 
4. Restart the mail server. 
5. Create the user on the mail server again. 
6. Test using the users mail client and post results. 

- Tom