Howdi! i wanna use login sender mismatch, to restrict some spam, which is passing the system.... the only Database .cf which i think is able to handle this, is mysql_virtual-mailboxes.cf but it doesent work with it. how do i have to implement it? Part1) smtpd_sender_restrictions = check_sender_access mysql:/etc/postfix/mysql-virtual_sender.cf, reject_non_fqdn_sender, reject_sender_login_mismatch Part2) smtpd_sender_login_maps = mysql:/etc/postfix/mysql-virtual_mailboxes.cf but this .cf isn´t the right for this. Which i have to use, or how do i have to write the .cf file ? thanks a lot!