Can it be explained how when I add a mail user on the master server that that transaction then is sent to the mail server? The reason I ask is I had to restore the mail server from an old backup so what I did to get it working was basically dump the master database and restored it on the mail server. But the issue now is the mail server is not receiving updates from the master server. Basically after adding yet another user the mail server does not receive that information. Can someone explain how the replication actually works?