If this is what I think, it might help me move the last users to ISPC3 from ISPC2 During some Update the Mailbox user received a Login field, Can this field be used to change the login of the pop3 user? My ISPC2 users have a form like zm-morons then is translated in the virtualdb to firstname.lastname@example.org If I am correct I can now make user email@example.com in ISPC3 and edit the Login field to be xm-morons. However my initial tests failed! Any help ? how can this be made to work?