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mediumExchangeExchange Onlineupdatelearn_exchange · May 14, 2026

How Exchange Online uses TLS to secure email connections

Exchange Online now uses TLS and Forward Secrecy to secure email communications, enhancing encryption standards for Microsoft 365 email traffic. This update strengthens email security by implementing stronger cryptographic protocols.

Learn how Exchange Online and Microsoft 365 use Transport Layer Security (TLS) and Forward Secrecy (FS) to secure email communications.
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Compliance
NISTSOC
Identity
authenticationidentity_governance
Security
network_securitycloud_securityendpoint_security
Audience
adminsecurity_engineerdeveloper
Environment
cloudhybrid
Ontology Topics
AZ-500SC-300
Classification confidence: 95%
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How Exchange Online uses TLS to secure email connections | 365Forge