1.Talked to my ISP, port 25 has been unblocked on their end.
Looking at my Firewall, it is has rules in place to accept SMTP.
In the Postfix master.cf “smtp inet n - n - - smtpd” is active
But at the end of the day, port scans read it as closed, and It cant read anything from within. What step am I missing here? Ive read tutorial after tutorial, and i got nothing.
I cannot send email. I tried to change the IP address of the server but it keeps getting Connection timeout and Network is unreachable to google and outlook emails.
my output to the command above was:
tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN
tcp 0 1 172.31.3.47:46578 173.194.202.27:25 SYN_SENT
tcp6 0 0 :::25 :::* LISTEN