Dovecot SASL

Howdy,

I know i've asked this before, but i think i got really no answer.

I'd like to have dovecot SASL, to check AUTH against an SQL table, instead of dovecot SASL use the AUTH MECH for imap/pop3.

I want this, to have the same behavior as I have now, where i use postfix with cyrus SASL on a different table (with the same login details), and when i have an user that his accounts was hacked for sending spam, i just block the send and allow the user to keep receiving emails, for example to warn him.

Would this be possible? Dovecot SASL against a SQL table? Havent found much info about it,

Thanks in advanced,