Can I use IPv6 port 25 outgoing on DigitalOcean? Cody Selzer April 16, 2021 01:25 Updated Question Can I use IPv6 port 25 outgoing on DigitalOcean? Answer No, IPv6 connections outgoing on port 25 are blocked network-wide. More details here: https://ideas.digitalocean.com/ideas/DO-I-1366 Related articles Why is port 25 blocked? cPanel DNS Cluster Guide Why is my website very slow on CloudLinux? Why is my Time To First Byte high? How to encode (punycode) internationalized domain names to add to cPanel Comments 0 comments Article is closed for comments.