Unable to connect to SMTP server

Question

I have a server with mail support, say example.com. I configured the server and added MX records via cpanel, so that I can receive and send mails via outlook.

Answer 1

Finally I just solved the issue by replacing some of the settings as below and it worked :).

    $mail->Host       = "smtp-mail.outlook.com"; // SMTP server example
    $mail->Port       = 587;  
    $mail->SMTPSecure = 'tls';