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About: Bastiaan Arkesteijn

Recent Posts by Bastiaan Arkesteijn:

Field notes: Azure AD Identity protection end-user perspective

Written on September 16, 2019 at 8:03 PM, by

In my previous blog post Field Notes: Azure AD Identity Protection we looked at the administrator perspective on Identity Protection. The focus was how to protect your corporate accounts. In this blog the focus is the end-user (employee and IT staff) experiences. The experiences I want to share are: Suspicious Activity User with a high-risk […]

Field notes: Azure AD Identity Protection

Written on August 29, 2019 at 3:40 PM, by

I’m managing several Azure AD tenants with a wide variety of licenses and settings. I’ve had a focus on Azure AD Identity Protection for the last weeks, so I’m sharing my field notes with you. What is Azure AD Identity Protection? Let’s start with a little introduction. Microsoft has a lot of experience with identities […]

Enable Valimail Single Sign-On with Azure Active Directory

Written on July 12, 2019 at 2:36 PM, by

In my previous blogpost, I described how to enroll Valimail Monitor for Office 365. The initial setup is based on credentials, stored at Valimail. This results in another set of credentials that needs to be remembered, needs to be stored in a password vault, another set that may be leaked… Additional admins and/or auditors also […]

Valimail Monitor for Office 365: Your Free DMARC Reporting Tool

Written on July 11, 2019 at 3:56 PM, by

On their security blog on the 3rd of June 2019, Microsoft announced that Valimail Monitor for Office 365 is available. This option enables organizations using Exchange Online from Office 365 for their company mail to leverage DMARC. The Road to securing E-Mail Cyberattacks are common these days. These attacks can be actively targeting your organization […]

Exchange migration “Couldn’t switch the mailbox into Sync Source mode”

Written on April 8, 2019 at 10:00 AM, by

The issue During one of my Exchange Online migration projects I encountered the following error on several mailboxes: “Message : Error: Couldn’t switch the mailbox into Sync Source mode. This could be because of one of the following reasons: Another administrator is currently moving the mailbox. The mailbox is locked. The Microsoft Exchange Mailbox Replication […]