I’m trying to open the port 8832 and 587 without any success. I created a firewall in the control panel and added them to the inbound and outbound rules:

Custom TCP 587 All IPv4 All IPv6
Custom TCP 8832 All IPv4 All IPv6

I also disabled ufw in my droplet:

ufw status verbose
Status: inactive

I also rebooted the droplet. However it seems to still block the ports 587 and 8832. Interestingly the ports 443 and 80 for the webserver are open. Can someone tell my why I can’t these specific ports?