[Dovecot] minor director issues

[Timo Sirainen]

On Thu, 2010-09-02 at 15:06 +0100, Timo Sirainen wrote:

> Director doesn't know what users are logged in, only CRC32 of their
> username. So doveadm first gets a list of all users, adds them to hash
> table, then gets the list of CRC32s of users from director and maps them
> to usernames via the hash table. <unknown> means that the user wasn't
> found from the hash table.

Oops, not CRC32, but a 32bit hash based on MD5 of the username. Still,
it's 32bit so with lots of users there will be a lot of collisions
(which shouldn't be a problem, except doveadm director map will list
users who haven't really logged in).