6 Dec
                
                    2010
                
            
            
                6 Dec
                
                '10
                
            
            
            
        
    
                6:32 p.m.
            
        It just seems to want to know if the current user is anonymous or not. http://hg.dovecot.org/dovecot-2.0/rev/c41ba33b8e16
OK, this looks plausible.
Something similar could be done about submit_user too. Instead of sending "submit_user=x", send both "master_user=x" and "submit".
We chose not to overload master_user=x in this way so that code/plugins that check master_user without knowing about or checking the submit flag don't behave incorrectly. Accidentally granting a mere submit user all of a master user's powers would be unsafe.
We will be pleased to see these features added to 2.1.