It is possible to add a Domain Based Message Authentication Reporting and Conformance (DMARC) record for your onmicrosoft.com domain in M365. Is that… Read the rest “Enable DMARC For OnMicrosoft.com Domains”
A common issue when deploying Exchange Online Protection (EOP) and Microsoft Defender for Office 365 (MDO) with on-premises Exchange is making Exchang… Read the rest “Configure On-Premises Exchange For EOP Spam Thresholds”
Active Directory Federation Services (AD FS) uses endpoints to provide access to features. There are a series of different endpoints which each serve… Read the rest “Check If AD FS WSTrust Endpoint Enabled”
There are a multitude of online tools that help diagnose issues with various mail services, but understanding what these tools actually check is valua… Read the rest “How to Use NsLookup To Check DKIM Record”
Note that there have been changes to Safe Links policy for Microsoft Defender for Office 365 (MDO).
Previously you could add URLs to the Safe Links pol… Read the rest “Migrate Safe Links Block Settings to TABL”
This post is a scan of Outlook.office365.com taken with the SSLLabs.com scan tool which analyses the TLS configuration of the server.
Depre… Read the rest “SSL Labs Scan Outlook.Office365.com–June 2022”
This was a question from a recent customer engagement: Why is the Microsoft Defender portal asking me to turn on the Unified Audit Log when I already… Read the rest “Defender Portal Enable Audit – Is That The Unified Audit Log?”
One of my customers wanted to verify their Domain Based Message Reporting Conformance (DMARC) record, and followed the post How To Use Nslookup To Che… Read the rest “How To Use Nslookup To Check DMARC Record”
Below are a series of links to the main Microsoft Defender for Office 365 blog. Shortcuts added here as this is one of my shared bookmarks.