Configuring the TLS Certificate Name for Exchange Server Receive Connectors
https://practical365.com/configuring-the-tls-certificate-name-for-exchange-server-receive-connectors/ Consider a scenario in which you’re trying to do the right thing by ensuring that authenticated SMTP client connections to your Exchange server are protected by TLS encryption. Most commonly this will be when you have IMAP or POP clients configured with the Exchange server (or a DNS alias that points to the Exchange server) as the SMTP server for sending email. If the client tries to authenticate over an unencrypted connection, a message is received with words to the effect of: The outgoing server (SMTP) mail.exchangeserverpro.net does not support the selected authentication method. After Googling around you learn that your SMTP client should use STARTTLS in order to authenticate securely. Here’s an example of how that is configured in Mozilla Thunderbird’s outgoing server settings. Notice also the use of port 587. Exchange servers are pre-configured by setup with a receive ...