在2018年10月31号之后，office 365将迁移所有在线服务使用TLS 1.2及其以上版本，下面是原文，请关注我加粗的部分

As previously communicated in MC126199 in December of 2017, to provide best-in-class encryption, and to ensure our service is more secure by default, we are moving all of our online services to Transport Layer Security (TLS) 1.2+.

成都创新互联是一家专注于成都网站制作、成都网站建设、外贸营销网站建设与策划设计,全州网站建设哪家好?成都创新互联做网站,专注于网站建设10多年,网设计领域的专业建站公司;建站业务涵盖:全州等地区。全州做网站价格咨询:18982081108

In the two communications referenced above, we had indicated that we would be removing support for TLS versions less than 1.2 from our online services, beginning March 1, 2018. After receiving valuable feedback from administrators like you, we have decided to extend the deadline for upgrading to TLS 1.2 or later to October 31, 2018.

有什么影响

在2018年10月31日之后，office 365将不再支持TLS1.0和TLS 1.1

As of October 31, 2018, Microsoft Office 365 will no longer support TLS 1.0 and 1.1.
By October 31, 2018, all client-server and browser-server combinations should use TLS version 1.2 (or a later version) to ensure connection without issues to Office 365 services. This may require updates to certain client-server and browser-server combinations.
If you do not update to TLS version 1.2 (or later) by October 31, 2018, you may experience issues when connecting to Office 365. If you experience an issue related to the use of an old TLS version after October 31, 2018, you will be required to update to TLS 1.2 as part of the resolution.

管理员应该做什么

We recommend you proactively address weak TLS usage by removing TLS 1.0/1.1 dependencies in your environments and disabling TLS 1.0/1.1 at the operating system level where possible. Begin planning your migration to TLS 1.2+, today.

另外有需要云服务器可以了解下创新互联scvps.cn，海内外云服务器15元起步，三天无理由+7*72小时售后在线，公司持有idc许可证，提供“云服务器、裸金属服务器、高防服务器、香港服务器、美国服务器、虚拟主机、免备案服务器”等云主机租用服务以及企业上云的综合解决方案，具有“安全稳定、简单易用、服务可用性高、性价比高”等特点与优势，专为企业上云打造定制，能够满足用户丰富、多元化的应用场景需求。

本文题目：Office365将切换到使用TLS1.2加密-创新互联
文章来源：http://myzitong.com/article/jgpph.html