Exchange Online ended support for TLS1.0 and TLS1.1 in October 2020. This year, we plan to disable these older TLS versions for POP3/IMAP4 clients to secure our customers and meet compliance requirem...
Updated Jan 06, 2023
Version 1.0The_Exchange_Team
Microsoft
Joined April 19, 2019
Exchange Team Blog
You Had Me at EHLO.