Tag: legacy tls deprecation

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Rows of computer servers and equipment in a well-lit, modern server room with ambient daylight from large windows.

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Microsoft is phasing out support for outdated TLS versions (TLS 1.0 and TLS 1.1) for POP3 and IMAP4 connections to Exchange Online, starting July 2026, to boost security.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.

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