[Dovecot] How to startup multi auth daemond

Hi all，

I want restrict some user to use POP3 and some other to use SMTP. I consider to startup multi Auth daemond and each use a diffenent SQL. For example: for pop3： select .... where pop3_service=1 and ... for smtp: select .... where smtp_service=1 and ...

I don't know if this is a good idea and how to setup dovecot to do so.

Is there any suggest?

Thanks!

-- Xueron Nee xueron@gmail.com