correct permissions /etc/dovecot ?

[voytek at sbt.net.au]

what permissions/ownership should /etc/dovecot/files have?

keep seeing this error below, I can correct as per log, BUT, wanted first
to check what it should be, rather than me 'fiddling'

thanks, V

SQL user is vmail
first_valid_uid = 2000
last_valid_uid = 2000

# ls -al
total 60
drwxr-xr-x  5 root    root    4096 Aug 16 14:45 .
drwxr-xr-x 82 root    root    4096 Aug 16 08:34 ..
drwxr-xr-x  2 root    root    4096 Aug 12 21:22 conf.d
-rw-------  1 vmail   dovecot    0 Nov  5  2013 dovecot-master-users-password
-rw-------  1 vmail   dovecot  735 Aug 16 14:45 dovecot-mysql.conf
-rw-------  1 vmail   dovecot  491 Aug 15 23:09 dovecot-share-folder.conf
-rw-------  1 vmail   dovecot  320 Aug 15 23:09 dovecot-used-quota.conf
-rw-r--r--  1 root    root    3414 Aug 16 14:43 dovecot.conf


Aug 16 16:28:01 auth: Error: passwd-file:
open(/etc/dovecot/dovecot-master-users-password) failed: Permission denied
(euid=97(dovecot) egid=97(dovecot) missing +r perm:
/etc/dovecot/dovecot-master-users-password, dir owned by 0:0 mode=0755)

Aug 16 16:29:16 auth: Error: passwd-file:
open(/etc/dovecot/dovecot-master-users-password) failed: Permission denied
(euid=97(dovecot) egid=97(dovecot) missing +r perm:
/etc/dovecot/dovecot-master-users-password, dir owned by 0:0 mode=0755)