Microsoft Phases Out Legacy TLS in Exchange Online
Microsoft is phasing out support for outdated TLS versions (TLS 1.0 and TLS 1.1) for POP3 and IMAP4 connections to Exchange Online, starting July 2026, to boost security. From then on, only TLS 1.2 or later will be accepted, making older connections obsolete.
#TransportLayerSecurity #LegacyTlsDeprecation #ExchangeOnline #Microsoft #Tls10