[Dovecot] SASL

Dear list members,

i am looking for a pop3 server and would like to know dovecot pop3 closer. In my current infra structure all my users have a single login and one password. I have been authenticating unix, web, ldap, smtp against saslauthd server.

It is possible to have dovecot pop3 authenticate by contacting saslauthd too ?

Another question:

All my user information are keeped inside LDAP using qmail.schema. Can dovecot pop3 look into ldap an return information about user mail directory, etc .... ?

Thanks in advance.