Exchange Online

Office 365 has experienced great success since its launch in June 2011, but it’s also had its share of failures as well. This article considers the most important technical advances in Office 365 and the most important parts of the ecosystem as well as some places where things didn’t go quite so well as either Microsoft or tenants would have liked.

Microsoft is doing its level best to remove SMTP basic authentication from Exchange Online as quickly as possible. Basic auth for SMTP connections will disappear gradually as time goes by. Tenants can make accounts more secure by removing SMTP authentication from accounts, something that Microsoft will do in the future when these connections are not used. An exception exists (for now) for SMTP client submissions, but these might also be affected in the future.

Microsoft is notoriously careful at giving out usage numbers for different Office 365 workloads.We know what the overall count is and now we have numbers for SharePoint Online and Teams. Some glances into a handy crystal ball and some inspired guesswork allows us to calculate likely numbers for Exchange Online, Yammer, and Planner and paint a more comprehensive picture of what’s happening inside Office 365.

Outlook users are more than aware of the problems involved in message recall, a feature that’s only available in Outlook desktop and has a nasty habit of not working. The reasons why the feature fails are well known, but soon might be addressed by a new Exchange Online implementation that promises to work for all clients and across Office 365. Time will tell if careers and love can be rescued by the new message recall.

Microsoft made a ton of Office 365-related announcements at their Ignite conference in Orlando. Here’s a summary of the key news for SharePoint, Exchange, Stream, Teams, Yammer, and Outlook. More information will emerge during the week, so stay tuned for more coverage as news emerges.

Microsoft Ignite 2019 is in four weeks, so now’s a good time to start browsing the session catalog to find interesting sessions to attend in person or listen to afterwards. I’ve been through the catalog to find some sessions and present my list here. Feel free to disagree and find other sessions in the > 1,400 listed already.

A recent Microsoft post contained the news that Exchange Online uses Windows Server Core. That might be news to some, but not to anyone who’s been following the advice of the Exchange product group. Exchange Online doesn’t use virtual servers, follows a preferred architecture, wants to reduce the potential attack surface, and extract as much CPU as possible out of its servers. All good reasons why Windows Server Core helps.

Microsoft posted an odd blog on September 9 to announce improvements in the relationship between Exchange Online and Azure Active Directory. Many Office 365 tenants might have ignored the post, but it’s actually about a piece of important work to help the service run better. Many updates happen to Exchange Online objects that need to be replicated to Azure Active Directory and onward to other Office 365 app directories. This work means that changes show up faster, which is good, but there’s a small downside to note.

Adoption and Change Management are often discussed when companies move to cloud services, including Office 365. How quickly can we adopt the new services and how can we manage change? As it happens, Microsoft is extremely interested in driving customer adoption, so much so that this can cause problems with change management simply because so much change happens so quickly insist Office 365. As we discuss here, a structured approach to change management helps.

In a surprising but welcome announcement, Microsoft moved the end of extended support for Exchange 2010 to October 2020. This version of Exchange was the most technology-rich and significant in the product’s history, which might be the reason why so many organizations still depend on Exchange 2010 for email. Better options exist, and Exchange Online is the natural place to go… if your network and applications allow the move.