it's mentioned in upgrade tutorial of iredmail:
http://iredmail.org/wiki/index.php?titl … .8.1-0.8.2

Please fix it by following above tutorial, it creates 3 addition columns and necessary indexes.

I faced the same problem updating iredadmin 0.1.8 -> 0.2

The reason is that there are fields missing in the database.

You may execute the following MySQL-Statements on your 'vmail' -Database on Table mailbox:

ALTER TABLE `mailbox` ADD `isadmin` TINYINT( 1 ) NOT NULL AFTER `username` ;
ALTER TABLE `mailbox` ADD `isglobaladmin` TINYINT( 1 ) NOT NULL AFTER `isadmin` ;

You will notice, that the admin user list will be extended by a global admin column.
That should do the trick - even it is a quite dirty one.

The real question here is: Why are (global)admin flags written into table mailbox instead of admin. My wild guess is that it either is grown stuff or it is part of the licence stuff removing the pro functions. Besides that - great job guys.

Hope it helps anyone.