i follow this tutorial
Everything work perfect but when the email client program(outlook or Thunderbird) try to log on in the mail server it couldn't.I create 2-3 account and i tried all the couriers (imam,pop3,pop3s) but the same problem appears.
As i far i can understand seems that the problem coming from Saslauthd.
In the configuration files when i see mail_admin_password i reaplesed it with
the passwd for mail_admin user of mysql,i think this is correct
Thanks in advance