Hi, I'm following the howto of installing postfix on debian and have nearly reached the end. At the moment, i can receive email using pop3/pop3s/imap/imaps and send mail using only smpt. I run a nmap and notice that port 110, 995, 143, 993 and 25 were open, but there's no open port 465 needed for smpts. How was that, is port 465 intended to open in the howto? or how to open that port so that i can send email securely using smpts. thanks alot!