pop3 imap4 smtp

  1. Exchange Online POP/IMAP Legacy TLS Cutoff: Fix Non-Human Clients by July 2026

    Microsoft will block Exchange Online POP3 and IMAP4 client connections that still negotiate TLS 1.0 or TLS 1.1 beginning in July 2026, and the systems most likely to break are not modern Outlook clients but older gateways, scanners, archival tools, mailbox-polling applications, and...
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    • Forum: Windows News