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 at 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