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Correlating events becomes easier as Microsoft adds ‘SessionID’ to the audit logs in EXO
Yesterday, Microsoft announced a new capability in Exchange Online which adds the 'SessionID'-field to the existing audit logs in Exchange Online. Audit logs are a useful feature to go through and look at what actions have been performed on a mailbox at any given...
Protecting your AD FS environment from password (spray) attacks (in an Office 365 context)
Recently, I attended the Thrive Conference in Ljubljana, Slovenia. During the IT Pro “Ask the Experts”-panel, an interesting question was raised: “How do I protect an on-premises AD FS environment from password spray attacks?”. Why is this such an interesting (and...
Office 365 Outlook on the web (OWA): controlling “opt-in” for early versions and new experiences
Recently, Microsoft announced they are releasing the ability for users to "opt-in" for new OWA, or Outlook on the Web, experiences themselves by switching a toggle that will be made available to them in the interface. Image courtesy of Microsoft. While I personally...
Re-awarded as Microsoft MVP for 2018-2019!
Perhaps I'm a bit late to the game, but I'm happy and honored to share with you that on July 1st, I've been re-awarded the Microsoft MVP award in the category "Office Servers and Services". This is my 6th consecutive time that I receive this award which is given to...
New hybrid Organization Config Transfer-feature (OCT) announced
Yesterday, Microsoft announced the Organization Config Transfer feature (OCT) in the Hybrid Configuration Wizard. The feature is expected to start showing up starting late June 2018. In an ongoing effort to improve the Wizard, I believe this is a step in the right...
How to leverage (multiple) migration endpoints to speed up migrations to Exchange Online
Last week, at Microsoft's Tech Summit in Amsterdam, I gave a talk about running Exchange Hybrid connections over the long term. In that session, I talked about securing a hybrid deployment and – somewhat related - how to best and securely publish migration endpoints...
Messages more marked as spoofed (and moved to Junk e-mail) in Office 365? You’re not alone!
Update 21/03/2018: Microsoft have dialed back on how quickly messages are marked as spoofed and, thus, moved to the Junk E-Mail folder. However, the guidance is to still properly implement SPF/DKIM/DMARC to be future proof. After all, at some point in the (near)...
Summary of announcements for Hybrid Exchange @ Ignite
Today, Microsoft has made some quite big (and important!) announcements around the work they are doing to improve the experience for Hybrid Exchange customers. These announcements were all "dropped" during session BRK3155 (How to thrive as an organization in Exchange...
Microsoft releases new “Tenant Restriction” capability
A few days ago, Microsoft announced the General Availability of the "Tenant Restriction" capability. Although I have not been able to play with it so far, I wanted to take a few moments to reflect on the usefulness of the feature following a debate I had with a...