User unknown in virtual mailbox table

[pixelpadre]

I created a new email account (simhof@rosinto.com) on server #1 tonight and I tested inbound to the new email account on server #1  from Server #2.  I get the following error (from tbird and roundcube) when attempting to send to the new email account (simhof@rosinto.com) from server #2.  But interestingly, email from server #1 to server #1 works properly as local email.  I tried tbird and roundcube both and got the same error.

An error occurred while sending mail. The mail server responded:
550 5.1.1 <simhof@rosinto.com>: Recipient address rejected: User unknown in virtual mailbox table.
Please check the message recipient "simhof@rosinto.com" and try again.

This is only happening to new email accounts on the server #1.  Previously created email accounts on server #1 work fine.

[pixelpadre]

Ok.  This problem has something to do with forwarding.  New email accounts on server #1 work fine on other domain.  The problem is rosinto.com.

Last night I tried to create a forwarding of simhof@rosinto.com.  then I deleted the forwarding rule in control panel.  After that, nothing works with rosinto.com inbound email.

So. THIS IS EMAIL FORWARDING PROBLEM.

[Sandeep]

check the ip if it is reachable  this is not CWP issue.