The first of them is:
I noticed when logged in as an admin, and you try to create an email address for a domain that belongs to a client, in the table: mail_user, the sys_userid assigned to that email address is 1 (which is the admin's). I thought this ID should be for the client him self who anyways owns the email domain.
However if the client him self creates the email address, then the sys_userid assigned is that of the client him self ..
I hit this snag when I tried to query for ALL email addresses that belong to a client (identified by sys_userid) and noticed some emails were then left out.
Till, is that how it's operating or its a bug?