Graph API Migration for Exchange Admins: Replacing Legacy EWS Scripts (2026)
Migrate legacy EWS scripts to Microsoft Graph in 2026: three Graph surfaces, OAuth + app permissions, RBAC for Apps, EWS to Graph cookbook + side-by-side examples.
Exchange Online Mail Flow Audit Checklist: 32 Checks Before You Change Anything (2026)
The 20 checks I run on Exchange Online mail flow before any change: SPF / DKIM / DMARC, connectors, transport rules, anti-spam, SMTP AUTH, Message Trace baseline.