[Dovecot] Doveadm protocol for parallel user processing

[Timo Sirainen]

On Thu, 2010-07-22 at 15:43 +0100, Timo Sirainen wrote:

> For local UNIX sockets that are 0600 root, the authentication wouldn't
> be necessary. It could internally check that if the listener socket has
> these permissions, it would just announce that doveadm is already
> authenticated.

Or slightly better: It's preauthenticated if the socket is 0600 and its
user matches service doveadm { user }. So if only a single UID is used
for all users, there's no need to start doveadm as root or to
authenticate if both the brain and workers start with same UID.