HI, I read in an falco article http://www.howtoforge.com/virtual-users-and-domains-with-postfix-courier-mysql-and-squirrelmail-centos-6.3-x86_64-p2 that the squirrelmail needs an internal database to check the username's & password's for its users. Cant we configure it in such a way, that it can pickup the usernames & passwords from a domain controller? Kindly advice.