cd postfix-3.5.4 && sh postfix-install -non-interactivedaemon_directory=/usr/lib/postfix manpage_directory=/usr/share/man html_directory=/usr/share/doc/postfix-3.5.4/html readme_directory=/usr/share/doc/postfix-3.5.4/readme
cd postfix-3.6.1 && sh postfix-install -non-interactivedaemon_directory=/usr/lib/postfix manpage_directory=/usr/share/man html_directory=/usr/share/doc/postfix-3.6.1/html readme_directory=/usr/share/doc/postfix-3.6.1/readme