Can't send mail to Office 365 without TLS after 31 Oct 2018? RRS feed

  • Question

  • Hi all,

    Some of our mail servers are old doesn't support  SMTP-TLS.

    We note this notes about enforcing TLS 1.2:

    Does it mean Office 365 doesn't accept inbound mail from external mail servers not talking TLS after 31 Oct 2018 ?

    I'm unable to find any official document.

    Would anyone please help ?

    Thanks a  lot

    Tuesday, October 16, 2018 8:32 AM

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