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Ubuntu 20.04 Port 465

fo flag
ccc

I've tried running the following. However, port 465 is still closed when I used an online port checker to test. Is there another way on Ubuntu to open this SMTP port? sudo iptables -A INPUT -p tcp --dport 465 -j ACCEPT sudo iptables -A OUTPUT -p tcp --dport 465 -j ACCEPT sudo iptables -A OUTPUT -p tcp --sport 465 -j ACCEPT

in flag
Generally `ufw` is the tool to use when making changes you your `iptables`. Can you [edit] your question to include the output of `sudo ufw status`? This will list which ports are available from where.
ccc avatar
fo flag
ccc
`sudo ufw status` returns: `sudo: ufw: command not found`
in flag
Are you sure you’re running Ubuntu? What does `sudo lsb_release -a` output?
ccc avatar
fo flag
ccc
It says ```Distributor ID: Ubuntu Description: Ubuntu 20.04.2 LTS Release: 20.04 Codename: focal```
sleepyhead avatar
in flag
Do you have an SMTP server running on port 465? If should show with this command: netstat - tunlp
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