[Dovecot] smtp -auth with using clear text password

[Agnello George]

Hi

I am setting up a mailserver .. where clients need to authenticate to the
mail server . The mta i am using is postfix . It is possible to use a file
like this :

----------------------------------
cat /etc/postfix/dovecote_passwd
agnello:123456

---------------------------------

where user is agnello and password is 123456

If you can please send me some reference links

thanks a ton



-- 
Regards
Agnello D'souza