exchange online security

Exchange Online security is a critical topic for IT administrators managing Microsoft 365 email environments. Recent discussions focus on Microsoft's deprecation of legacy TLS 1.0 and 1.1 protocols for POP3 and IMAP4 connections, with a deadline to move to TLS 1.2 by July 2026. This change affects help desk tools, monitoring systems, ticketing platforms, scanners, line-of-business applications, archiving scripts, migration utilities, and older desktop clients that still rely on these protocols. The tag covers security updates, compliance requirements, and practical steps to ensure secure email access. Administrators must identify and update affected systems to avoid service disruption and maintain secure connections.