[Dovecot] User another userdb to sasl

[Nicolas Letellier]

Hello,

I use Dovecot 1.0.12 with Postfix on FreeBSD. It works perfectly, but I 
have a question. My users are virtual (stocked in a MySQL database).
I use SASL Dovecot authentification, and SASL uses my userdb (for 
POP/IMAP access).

However, I would like my users have an other login/password to send 
email with SMTP/SASL. Or, I don't want my users use the same 
login/password for POP/IMAP than SMTP. More, I don't want some users 
could send emails with their login/password, but I want they can fetch 
their mails.

I'm looking for an option in my dovecot.conf to specifie a table SQL for 
SASL authentification (and don't use same table SQL than IMAP/POP access).

How I could do for this problem? Do you have an idea? Or, simply, is it 
possible with Dovecot SASL? I read all Dovecot wiki, with no results...

Thanks very much.

Nicolas