Hi,
according to the documentation it stated
Summary eg For user1 for domain1
The user account will be user1 (eg johnb) and the person uses that name (& corresponding password) to login to the server or to webmail. The email address for the user will be the same as the pseudonym ie sales@domain1 and that is the address the user should publish and use as the return email address. Obviously the name before the @domain is different to their login username, that's the compromise to be accepted if using sme this way. It is quite common in practise, as users often have different "position related" pseudonyms anyway eg manager@domain1 forwards to user1.
As the user account user1 has been created on the server, then that will also work as a valid email address ie user1@domain1 will deliver email to user1, but note also that email "inadvertantly" sent to user1@domain2 or user1@domain3 or user1@domain4 will also be sent to user1. This is not usually a problem as you simply don't tell user1 that any other hosted domain addresses will work for that name.
It say that it is inadvertantly will sent to the other domain account. Is there anyway i can fix this problem?
ThankS!