Office 365 Planned Service Changes - December 2017 Updates

A quick post announcing the recent updates to the Office 365 Planned Service Changes series of posts:

Added Mandatory use of TLS 1.2 in Office 365 - action required by March 1, 2018

Hopefully this information is helpful in keeping pace and managing change in Office 365.

Comments

Anonymous
December 27, 2017
We are using internal SMTP based on IIS 6.0 on Windows Server 2012 to rely messages from internal systems to Exchange Online (based on official MS support article). I have checked traffic on the server via Wireshark and i can see it uses TLSv1.2 when talking to Exchange Online inbound server. So, i assume we are already ok with TLS 1.2 switch. But i would love to hear a definitive answer. As IIS 6.0 had no support for new TLS in the past. But i guess in this scenario and on WS2012 it actually supports it?
- Anonymous
  January 29, 2018
  Hi wr - does this recent post from the Exchange Team help address your questions?Regards,Thomas
  - Anonymous
    January 29, 2018
    Not really. We don't have on-premise Exchange. But as Windows Server 2012 has TLS 1.2 by default and we have latest security updates, i think we should be ok.