Koltrix
Guides
Ports 25, 465, 587 and 2525: which should you use?
Port 25 is for server-to-server relay, 587 and 465 are for submission, and 2525 is a common fallback. What each port expects and why clouds block 25.
4 min read
Port 25 is for server-to-server relay, 587 and 465 are for submission, and 2525 is a common fallback. What each port expects and why clouds block 25.
4 min read