Heh? they pretty much do exactly as described.

the service lmtp is how you inject email into dovecot using the lmtp protocol.

the service auth is how you can authenicate user/password against
dovecot, normally used in postfix for sasl auth

the mode setting is just that, the file mode to set for that file,
0666, all access, 0660 only user/group access.

Quoting Matthew Brown <mnbbrown@gmail.com>:

Could somebody be able to explain to me what the various
unix_listeners do in the Dovecot 2.x configuration (specifically in
10-master.conf).

Currently, for postfix to use for local delivery, I have:

service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0660 user = postfix } }

and for auth I have:

service auth {

unix_listener /var/spool/postfix/private/auth { mode = 0666 }

unix_listener auth-userdb { mode = 0666 user = vmail } }

So what does each one specifically do?

Also, does somebody know of a resource that can explain the mode
setting? I couldn't seem to find anything on the wiki.. Sorry if these questions seem simple, Im still trying to get a grips
with dovecots workings.

MDA: Dovecot v2.0.13 MTA: SMTP User & Virtual Domain Management: MySQL

Cheers, Matthew