Hello,
I'm facing an issue with the postfix default post. right now my server is use port 25 for sending emails. now i want to change it to port 465 port. i change the setting in master.cf file. and my port 465 is also listing but when i try to send an email using port 465 using smtper connection timeout. can anyone please let me know how to fix this issue.
as i do research i might see my server send email from contabo server address and they do not have SSL . if that's the issue please guide me as well.