Hello, I am able to send/receive emails within the Mail server.. however when using a third-party email such as Outlook, Gmail, or even windows mail... it's not working it refuse to connect... the ports should be open ... any thoughts? or points to look at? thanks.

Good afternoon, Sir.
Could your Outlook add your email account normally? Is the connection normal?

Hey! I am getting 2 errors: Couldn't reach server. Please double-check the server and port number. I've tried telnet the mail name and I get 200 response so the ports are open so I am not sure where to look at this point.

and another domain I am getting "Server returned error: "TLS Negotiation failed, the certificate doesn't match the host., code: 0"

Hello, I was able to make it work by copying the SSL into the mail server domain if someone ran into this problem.