Question

How do I set up SMTP on port 587

Posted January 30, 2015 10.7k views

I am using POSTFIX and Dovecot and have the incoming email working OK. Also outgoing via mail or sendmail works OK. But I can’t seem to get Thunderbird on my home computer to connect with the server on port 587 (or 25 for that matter). I have tried telnet and also did an nmap which showed these ports open:
Discovered open port 80/tcp on 107.170.244.155
Discovered open port 143/tcp on 107.170.244.155
Discovered open port 8080/tcp on 107.170.244.155
Discovered open port 995/tcp on 107.170.244.155
Discovered open port 993/tcp on 107.170.244.155
Discovered open port 110/tcp on 107.170.244.155
Discovered open port 22/tcp on 107.170.244.155

Gut no 587 or 25. What am I missing?

Add a comment
bartonphillips
By:
bartonphillips

These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.

×
Submit an Answer
1 answer
ahrotahntee January 30, 2015

Since neither is open, I’m going to take a stab in the dark and say postfix isn’t running.

service postfix start

Reply Report
  • bartonphillips January 30, 2015

    I had to edit /etc/postfix/master.cf and add
    submission inet n - - - - smtpd
    -o syslogname=postfix/submission
    -o smtpd    tlssecuritylevel=encrypt
    -o smtpdsaslauthenable=yes
    -o smtpd    relayrestrictions=permitsasl_authenticated,reject

    That opened port 587 but I am still having problems getting the send side in Thunderbird to work. Getting email to work all the way around is pretty complicated between postfix and dovecot.

    Reply Report

Looking for something else?

Ask a new question Search for more help