Hello all... Ok, i´m in the page 5 , and i don´t understando what i have to do! This peace of the tutorial is very strange... Take a look: Next we will tweak Postfix Admin. Change both create_mailbox.php in the main and admin folder. system("sudo /usr/sbin/maildirmake.sh ".$fDomain." ".$fUsername. " ". $quota); db_log ($SESSID_USERNAME, $fDomain, "create mailbox","$fUsername"); but, in the file, there´s nothing about this. This modification in postfixadmin is to change when i create a mailbox. all mailboxes will be created as maildir . So... Someone coul´d help me?