I got weird, silly problem. I've created some mailboxes. Configured them, and they worked fine. Then I wanted to add some "forward only" addresses, and suddenly... Mailboxes disappeared from panel. But they still worked, anyway. To regain access to those accounts settings via panel, I've created accounts again. Well, as I could expect, my working accounts became empty. Well, it's not big deal, but it seems like those disappeared accounts still exist somewhere and I don't know how to find them. To delete them, for example. Any clues?