I'm using WordOps 3.11.2, and I can't open port 587.
I have a site in Wordpress that uses Contact Form, and when I disable the firewall (csf -f), the contact form works fine.
When I enable firewall, contact form stop working.
I change the setting in CSF.CONF, but nothing works.
My droplet is at DigitalOcean, and the support couldn't help me. :
Does anyone know what happens?