enable smpts (port 465)

Discussion in 'HOWTO-Related Questions' started by tuananh87vn, Sep 30, 2009.

  1. tuananh87vn

    tuananh87vn New Member

    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!
  2. edge

    edge Active Member Moderator

  3. tuananh87vn

    tuananh87vn New Member

    ah yes, that's great. Thanks so much!

    My mistake is that just uncommented the first line only:
    #smtps    inet  n       -       -       -       -       smtpd
    this makes postfix listen on port 465 yet that's not enough, i couldn't configure my email client to send email thru port 465 (encryption type is ssl)

    only when the next line is removed comment
    #  -o smtpd_tls_wrappermode=yes -o smtpd_sasl_auth_enable=yes
    i can send message wrapped by ssl

    by the way, if i just uncommend the first line, i could still send message under port 25 with tls. So what's the difference btw ssl and tls, can u explain it for me?

    thank you edge, and you, falko, for your outstanding howto!
    Last edited: Oct 1, 2009

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