TLDR Tech / InfoSec
Microsoft to deprecate legacy TLS in Exchange Online starting July
Microsoft will fully block TLS 1.0 and TLS 1.1 connections for POP3 and IMAP4 clients in Exchange Online starting in July, removing the prior opt-in path and requiring TLS 1.2+ for all legacy applications, embedded devices, and custom email integrations to avoid connection failures.
Read the full story