pam

First of all, of course we need to compile postfix for supporting sasl.the easiest way is read tutorial how to compile postfix rpm source at Simon J Mudd’s website

Since i’m using mysql database for storing username/password, i’m gonna show you how to create smtp authentication/SASL.

Install pam_mysql:

# yum -y install pam_mysql

Edit /etc/pam.d/smtp file :

auth required pam_mysql.so user=postfix passwd=password host=localhost db=postfixdb table=mailbox usercolumn=username passwdcolumn=password crypt=1 md5=1 sqlLog=0
account sufficient pam_mysql.so user=postfix passwd=password host=localhost db=postfixdb table=mailbox usercolumn=username passwdcolumn=password crypt=1 md5=1 sqlLog=0