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Hi. Exchange 2019 on-premise.
What is the difference between the two protocols? Most external systems in the SMTP only work with STARTLS and do not work with SSL/TLS
Does it depend on the external server or my server? What does support for both protocols depend on?
I don't understand where and how these protocols are configured, work.
The administration and maintenance of Microsoft Exchange Server to ensure secure, reliable, and efficient email and collaboration services across an organization.
I don't understand what the choice of these protocols depends on.
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Answer accepted by question author
SSL is deprecated. TLS is what you are really using. STARTTLS is actually a command.
See: