Starting October 31st 2018 Office 365 will only allow TLS 1.2

Update 5 September 2018 I got confirmation that SMTP also requires TLS1.2, see also this support article. Be sure to check all of you incoming/outgoing SMTP connections. That might be a good time to review those SMTP connections with this and this Microsoft article.   Update 10 February 2018* So, Microsoft announced a new date for this change and updated their support article regarding TLS support. It's now October 31st 2018, instead of March 1st 2018. This gives organizations a

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