Office 365 adds protection against downgrade and MITM attacks

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Microsoft is working on adding SMTP MTA Strict Transport Security (MTA-STS) support to Exchange Online to ensure Office 365 customers’ email communication security and integrity. Once MTA-STS is available in Office 365 Exchange Online, emails sent by users via Exchange Online will only one delivered using connections with both authentication and encryption, protecting against both email interception… Read more »