[Dovecot] IMAP folders sort order

Hi all

We migrated our IMAP server from Courier to Dovecot. The minor problem appeared: Dovecot LIST command now shows mailbox listing in some weird order. (I suppose, it is filesystem directory order) Previously, with Courier, it was sorted, i.e., the INBOX was the first, followed by other system folders. This is not a problem with our webmail, because it sorts folders by its own. But with some IMAP clients, we have folders intermixed.

Is there a way to influence the folder sort order in Dovecot?

WBR, valery