[Dovecot] Dovecot 2.0 - LDA auth-master issues

[Floris Bos]

Hi,

I'm running a Postfix+Dovecot+MySQL setup, and am trying to upgrade to Dovecot 
2.0 beta 4.
The problem I run into is that lda cannot connect to the auth-master socket.

==
Apr  9 15:29:51 mysql postfix/pipe[3749]: 2AAB04517F: to=<EMAIL-ADDRESS>, 
relay=dovecot, delay=0.02, delays=0.01/0/0/0.02, dsn=4.3.0, status=deferred 
(temporary failure. Command output: lda: Error: userdb lookup: 
connect(/usr/local/var/run/dovecot/auth-master) failed: Permission denied 
(euid=80(www) egid=1003(dovecot) missing +r perm: 
/usr/local/var/run/dovecot/auth-master, euid is not dir owner) lda: Fatal: 
User lookup failed: userdb lookup failed )
==

Dovecot seems to set the permission of the auth-master socket to user root, 
mode 600.
In Dovecot 1 there was a "mode" and a "user" option to change this. 

In Dovecot 2 I can only find an option to change the socket path 
("auth_socket_path"), but not it's user or mode.
Any idea on how to solve this?
 

Your sincerely,

Floris Bos