Can Postfix use two SMTP port ?

Discussion in 'General' started by leiw, Sep 19, 2014.

  1. leiw

    leiw Member


    SMTP 25 port is default, how about add another port for SMTP? such as 2222??

  2. klamardo

    klamardo New Member

    yes ..

    edit /etc/postfix/

    smtp inet n - - - - smtpd
    2222 inet n - - - - smtpd

    save .. restart postfix
  3. leiw

    leiw Member

    Hello klamardo,

    I have followed yours to add 2222 port, but I found out can't telnet 25 and 2222, I can telnet 995, 465, 110, checked firewall is good.

  4. leiw

    leiw Member

    I know what now, home isp blocked those traffic, thanks.
  5. leiw

    leiw Member

    OK now, 25 port blocked by home isp, port 2222 port can telnet.

    Thanks !
  6. till

    till Super Moderator Staff Member ISPConfig Developer

    But you wont be able to use your server as mailserver then as no other external mailserver will try to connect to your server on port 2222.
  7. leiw

    leiw Member

    Just tested, I can send email to external email server and also can receive email .

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