pointing to a wrong hostname

rpmaniquiz

New Email
Hi!

We have a company incoming email problem.
clients from other countries email us,
the problem is when they are tring to send to our email addresses there's a bounce back message to the sender that the recipent address is rejected.
in fact the email address is correct.

here's is the diagnostic

us2.mx.mailhostbox.com #<us2.mx.mailhostbox.com #5.1.1 smtp;550-5.1.1 <mail@domain.com>: Recipient address rejected: User unknown in virtual alias table 550 5.1.1 Please see http://support.mailhostbox.com/email-administrators-guide/error-codes for explanation of the problem.> #SMTP#

hope you can help,

thanks in advance.
 
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