M365 - Exchange Online Center

ENow Software's Microsoft Exchange Online blog built by Microsoft MVPs for IT/Sys Admins.

Posts by

Jaap Wesselius

Jaap is a Microsoft MVP for Office Apps and Services. Jaap is an independent consultant, primarily focusing on Exchange server, Skype for Business and Office 365.

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TLS Changes in Office 365

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Jaap Wesselius

By now you must have heard that Microsoft is moving away from Basic Authentication and that all client authentications will move to Modern Authentication, and I've blogged about this previously.

Another thing that is happening is Microsoft moving away from TLS 1.0 and 1.1 and only allowing TLS 1.2 connections. This can have an impact on your organization too, so let’s have a look what is going to happen and why.

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Reply All Storm Protection in Exchange Online

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Jaap Wesselius

25 years ago, I was working for Microsoft. And one morning we received a message with the subject line “Why am I on this mailing list?  Please remove me from it.”  This was followed by another email saying “Me Too!”, and then another “Me Too!”, and another, and another. These were followed by multiple emails with subject line “People stop with the reply alls”. Before we knew it, our Exchange environment was brought to a standstill because of the enormous amount of email sent via this Distribution Group.

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Microsoft Stops Basic Authentication, Now What?

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Jaap Wesselius

October 13, 2020, is an important date for Microsoft for a variety of reasons. On this date, Microsoft will stop support for their 2010 suite of products like Exchange 2010, SharePoint 2010, Office 2010, etc. In addition, Microsoft will stop basic authentication in Office 365 as outlined in their post Upcoming changes to Exchange Web Services (EWS) API for Office 365 and their follow-up post Basic Auth and Exchange Online – February 2020 Update.

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