On Tue, 2010-11-16 at 13:16 -0500, qmail@top-consulting.net wrote:

Nov 16 13:07:35 pop dovecot: IMAP(sheken@top-consulting.net): userdb
lookup: connect(/var/run/dovecot/auth-master) failed: No such file or directory

It should be connecting to auth-userdb. You probably have auth_socket_path changed. You could just comment it out.

The second part is that you most likely have to change auth-userdb socket's permissions as well. From example 10-master.conf:

service auth {

auth_socket_path points to this userdb socket by default. It's typically

used by dovecot-lda, doveadm, possibly imap process, etc. Its default

permissions make it readable only by root, but you may need to relax these

permissions. Users that have access to this socket are able to get a list

of all usernames and get results of everyone's userdb lookups.

unix_listener auth-userdb { #mode = 0600 #user = #group = }

So probably just set "user = vmail" there.