[Dovecot] Dovecot 1.1 Quota Plugin Configuration?

[David Reid]

With 1.0 I had the quota plugin set to allow some accounts to have no
quota by setting their size (in bytes) to 0 (via mysql). Following the
upgrade to 1.1 this no longer seems to work and has resulted in a lot of
annoyed people having messages bumped :-(

The config I have is as follows...

  quota = maildir
  quota_rule = *:storage=15M
  quota_rule2 = Trash:ignore
  quota_rule3 = INBOX.Trash:ignore
  quota_rule4 = INBOX.SpamTrain:ignore
  quota_rule5 = SpamTrain:ignore

In the sql.conf I get the quota for each mailbox using this line

user_query = SELECT '/var/vmail/%d/%n' as home,
'maildir:/var/vmail/%d/%n' as mail, xxx AS uid, xxx AS gid,
concat('maildir:storage=', mb_quota) AS quota FROM
mailboxes WHERE mb_mbname = '%u' AND mb_active = '1'

With this setup when I have a mb_quota set to 0 it simply bounces all
messages for the mailboxes that should have no quota.

Any ideas how I need to fix this?

david