Mailenable problem from hell.

[Foxtrot@]

We have a really bizarre problems with Mailenable & plesk, users from our server cannot email a particular domain that we know to work fine. Here are the error messages:

= = = = = = = = = = = = = = = = = = = =

From Outlook Express

The message could not be sent because one of the recipients was rejected by the server. The rejected e-mail address was '[email protected]'. Subject 'test', Account: '[email protected]', Server: 'mail.domain.tld', Protocol: SMTP, Server Response: '550 Requested action not taken: mailbox unavailable or not local', Port: 25, Secure(SSL): No, Server Error: 550, Error Number: 0x800CCC79

From Webmail

There was an error sending your message: unable to add recipient [[email protected]]: Invalid response code received from server

= = = = = = = = = = = = = = = = = = = =

I've tried :-

- Upgrading to Plesk 7.5.6
- Installing Plesk 7.5.6 for Windows Update (060502.17)
- Running: mchk.exe --all --fix=all, mchk & Plesk Reconfigurator
- Double checking the mail enable SMTP settings.
- The server in question is not on any RBL lists
- Reverse dns is setup correctly.
- The address I'm sending to works fine, I've tested it on other working mail servers.

I can telnet to the domain in question so its not a connection issue, the problem is happening on any of the 300 names on the server so its not a blocking issue, and the server is not listed on any RBL lists. I've also tried sending mails from different IP addresses. If anyone has seen this problem before I'd greatly appreciate any advice you can give.

 

[Gris@]

Maybe DNS is wrong?

 

[lordElrond]

Indicates that your recipient's email address was not recognized by your ISP mail server or (mailbox not found or cannot access it).

This message indicates that the recipient specified in the RCPT command is not locally hosted on the server and relaying options prevent the message being forwarded to the recipient.

To resolve this you should ensure that an address map has been associated with the desired mailbox.

If you receive this message then you should use the MMC to ensure that this address has been assigned to a mailbox. This can be done in the MMC by viewing the properties of the Mailbox.

IF THAT IS NOT IT: try this
http://support.microsoft.com/?kbid=208814

 

[Foxtrot@]

Originally posted by Gris
Maybe DNS is wrong?

No, the DNS is ok, we can send messages to other addresses outside the server. Also the ME diagnoses is showing no errors.

 

[Foxtrot@]

>To resolve this you should ensure that an address map has been associated with the desired mailbox.

Not sure what you mean here, but we have 300 other domains on this server and none of them can email the particular domain. But using telnet on the server I can so it has to be a Mail Enable issue. :-( Emails to other domains work fine.

 

[Foxtrot@]

At last I figured it out after loosing much of my hair, and it was a simple problem too, a customer added this domain as an alias to their site even though it was nothing to do with them, I guess if they had added hotmail.com then no one else on the server could email hotmail, perhaps this is a flaw in the system. Not good but at least its easy to fix.