Hi.
I know, this is a pretty old thread, but since I just ran into similar
problems while setting up my one-user-per-virtual-domain postfix +
multi-instance-dovecot/-lda, I thought I might share my "fix" in this
related (and most useful) thread.
My setup might not be used often - I am running two dovecot instances
(on different IP addresses on the same server, in case you're
wondering), with the first instance exporting the auth-master socket. I
am using different UID/GIDs for my virtual domains/mailboxes. I
couldn't get postfix setgid accordingly when callig deliver, and I
didn't want to use SUID on deliver.
The versions I am using are:
dovecot 1.0.13
postfix 2.3.8
My first dovecot instance is using:
auth default {
socket listen {
master {
path = /var/run/dovecot/auth-master
mode = 0600
user = vmail
}
}
}
The other is using:
protocol lda {
auth_socket_path = /var/run/dovecot/auth-master
}
And my postfix's master.cf is:
dovecot unix - n n - - pipe
flags=DRhu user=vmail:vmail argv=/usr/lib/dovecot/deliver -f
${sender} -d ${recipient}
dovecot-other unix - n n - - pipe
flags=DRhu user=vmail-other:vmail-other argv=/usr/lib/dovecot/deliver
-c /etc/dovecot/other/dovecot.conf -f ${sender} -d ${recipient}
My fix is: I use filesystem ACLs and just set the ACLs of the
auth-master socket after starting the first dovecot instance (which
creates the socket).
I.e. I run after starting dovecot (and waiting for a second...):
setfacl -m u:vmail-other:rw /var/run/dovecot/auth-master
This works only for filesystems with ACL support, of course. I use
setfacl with ext2/3; other filesystem ACL tools might differ.
Oh, and thanks for dovecot and this supportive mailinglist btw. (even
though this is my first post: hi everyone :) )
Greetings,
Jens
