Email Problem, User unknown in virtual mailbox table

[DonnaC]

I wonder if anyone can help me please.

I bought a new Cent OS 5 (1and1) server which has web-space for two main domains hosted on it, as two different hosting Accounts in Parallels SB Plesk 10.2. One domain I set up with a local email account (on the server) in Plesk, and for the second domain I use a Google Apps Gmail account for external email.

The problem is that when I try to send email from my webmail in Plesk to the other domain, the moment I click the "Send" button a popup error appears saying:

SMTP Server rejected email. Returned:550 5.1.1 Recipient address rejected: User unknown in virtual mailbox table

I also tried sending mail using PHP, and the error I get there is:

Error: Failed to add recipient
[SMTP: Invalid response code received from server (code: 550, response: 5.1.1 :
Recipient address rejected: User unknown in virtual mailbox table)]

Could anyone point me in the direction of a solution please? Is it because I have the other domain's web-space hosted on the server that it is looking for it locally, or is it something completely different?

I'm concerned I may have got something wrong in the configuration when I set everything up.

Update: The problem has now resolved, although I'm not sure what has changed.

 

[IgorG]

/usr/local/psa/admin/sbin/mchk --with-spam should help with it.

 

[aammee]

Hi Igor,

I have done that, here is the output, but it does not resolve the problem. Any other pointer? I am on Ubuntu 10.04 LTS and Plesk 10.4.4

~# /usr/local/psa/admin/sbin/mchk --with-spam
==> Checking for: mailsrv_conf_init... ok
==> Checking for: mail_handlers_init... ok
==> Checking for: mailsrv_entities_dump... ok
==> Checking for: mail_admin_aliases... ok
==> Checking for: mail_auth_dump... ok
==> Checking for: mailman_lists_dump... ok
==> Checking for: mail_kav8_restore... ok
==> Checking for: mail_responder_restore... ok
==> Checking for: mail_postfix_transport_restore... ok
==> Checking for: mail_spam_restore... ok
==> Checking for: mail_grey_restore... ok
==> Checking for: mail_mailbox_restore... ok
==> Checking for: mail_spf_restore... ok
==> Checking for: mail_dk_restore... ok
==> Checking for: mail_drweb_restore... not exists