I installed odoo 8 on ubuntu 14:04 server. But having problems with outgoing email. I own domain email system ex: domain.com with 2 email: sales@domain.com and catchall@domain.com (catch all email). I have configured to send and receive email successfully (SMTP and IMAP). 
Now, if I create a new user with alias sales@domain.com or catchall@domail.com (email already exists on the mail server), the user is sent to a gmail email address. This email is sent out OK. 
But if I create a user with the alias: acb@domain.com (email does not exist on the mail server) and send emails from the user to a gmail email address. This email was not sent out. On this 7 OpenERP still perform normally.

I think the problem in smtp authentication to enable or disable printing odoo 8. How can I solve this problem?