app-MAIL-temp/docs/ufw.md

SimpleLogin needs to have the following ports open:

• 22: so you SSH into the server
• 25: to receive the incoming emails
• 80 and optionally 443 for SimpleLogin webapp

If you use UFW Firewall, you could run the following commands to open these ports:

sudo ufw allow 22
sudo ufw allow 25
sudo ufw allow 80

# optional, enable 443 if you set up TLS for the webapp
sudo ufw allow 443