migrate from shadow to vmail password
 

Hello every1
i have a new postfix/courrier-imap/mysql mail server
and i want to migrate my current mail users (which are a system users) to the mysql database
the problem is :
in courrier imap only MD5 encrypted password are supported , i can not just copy past passwords from /etc/shadow to the database, thus i need a way to get courrier reconizing the shadow password hash and do authentication

thnx from the advance .