[Dovecot] acl flag to limit imap_acl based acl changes

[Amon Ott]

Hi all!

I have tried the imap_acl plugin with 1.2.9 today, but was not able to limit 
acl changes for those mailboxes where acl changes should be forbidden.

http://wiki.dovecot.org/ACL says that "a" or "admin" covers "Administration 
rights to the mailbox". However, removing "a" from owner acl (using "lr") 
does not help, the user can still change all acl flags for all users with 
imap. Write accesses to mails are forbidden as they should.

Is this intended or a bug?

We would like to give all users the ability to use ACLs through IMAP, but the 
current behaviour endangers our read-only mail archives.

Amon Ott
-- 
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