Peter Schmidt
Microsoft Purview licensing can get confusing quickly. Here is a practical look at what you get with Business Premium, E3/A3 and E5/A5, when you need premium Purview licensing, and where PAYG fits in.
Understanding Microsoft Purview Audit retention, licensing, investigation capabilities, and how to build an audit strategy that actually helps when something goes wrong.
This post is part of the Email Security Foundations series. Rotating DKIM keys Key rotation is good practice. If a private key is ever compromised, rotating limits how long an attacker can use it. Exchange Online makes this easy. How to connect to Exchange Online using PowerShell to rotate the DKIM Keys. After rotation Exchange … Read more
Microsoft published a set of reference architecture diagrams for Purview. If you work with M365 data protection, they’re worth reading. There are 11 diagrams, from the Microsoft Purview Customer Excellence Engineering team, covering the full stack: They’re reference flows, not implementation guides. They won’t tell you how to build a policy, but they help you … Read more
This post is part of the Email Security Foundations series. What DKIM actually does DKIM stands for DomainKeys Identified Mail. Where SPF checks where a message came from, DKIM proves that the message hasn’t been changed while it was in transit. When you send an email, your mail server adds a cryptographic signature to the … Read more