Thanks for the reply falko!
so in putty I should run this code bellow ?
Code:
postconf -e 'home_mailbox = Maildir/'
postconf -e 'mailbox_command ='
/etc/init.d/postfix restart
and since my VPS has only 128MB of ram I think I shouldn't install ISPConfig,
or I can install it but not run on a boot ?