TLS 1.2 for Exchange 2007 on 2008 SP2 RRS feed

  • Question

  • Hi,

    we still have a legacy Exchange Server 2007 SP3 UR 19 running and I was wondering what will happen after March 1st 2018 when Office 365 is going to turn off TLS 1.0 & TLS 1.1.

    We have enabled TLS 1.1 & TLS 1.2 on our 2008 SP2 Server after applying KB4019276 and it is working for OWA traffic, however not for SMTP connections.

    Q1: Is there a way to enable TLS 1.1 & 1.2 for Exchange 2007?

    Q2: Are we still able to send/receive mail to/from organizations that use Office 365 after March 1st?

    Q2.1: Will the SMTP connection fall back to no encryption if TLS 1.2 is not supported? - There are still mail servers out there wich don't even support encryption at all.


    The End of Support for Older TLS Versions in Office 365

    Exchange Server TLS guidance, part 1: Getting Ready for TLS 1.2

    SMTP – key piece of Exchange server infrastructure – support for TLS 1.1 and 1.2 were added in Exchange Server 2013 CU8 and Exchange Server 2010 SP3 RU9. This means if you want to add support for the latest ciphers and TLS versions, you may need to apply an update



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    Thursday, February 8, 2018 7:37 AM

All replies

  • Exchange 2007?  Seriously?

    Exchange 2007 reached end of life on April 11th 2017. What’s your plan to move?

    Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."
    Celebrating 20 years of providing Exchange peer support!

    Friday, February 9, 2018 3:54 AM