postfix sender problem

hello, i have install postfix on an ubuntu box almost like from http://www.howtoforge.com/virtual_postfix_mysql_quota_courier without spamassassin & clamav. Everything works fine , thanks falko for the howto.
Now i want to resolv one problem: i want an user name to send mail only from his the login name.. to stop junk mail. Thank you anticipate.

 

Can you describe your problem in more detail?

 

i want to configure postfix to verify sasl_username if is equal with the MAIL FROM address. i google it that problem and i found the directive smtpd_sender_restrictions = reject_sender_login_mismatch -but i didn't make it to work with the mysql database. if u have some sugestion i will be thakful

 

Have a look at this discussion: http://readlist.com/lists/postfix.org/postfix-users/8/43982.html