[Dovecot] "forgot my password" feature

Hi,

We have a mail server with the postfix/Squirrelmail/Dovecot(v.1.1.11) combination which we have user data on MySQL through virtual users. We have configured the SquirrelMail interface so that users can now change their own passwords.

Is there any opensource solution to provide "self service password management" which would allow us to add the "I forgot my password. Lets reset it" feature which would do the authentication with the help of some random personal data or personal question/answer combination ?

Regards.

-- Mustafa Çağataylı BİM