Comprehensive guides for Exchange Server, Office 365 migrations, Graph API automation, and Azure Active Directory / Entra ID identity security.
HA, DAG, Migration, and Mailbox Troubleshooting (70+ posts)
Administrative one-liners, cmdlets, and scripts (50+ posts)
Tenant administration, licensing, and cloud identity
PIM, Entra ID, SPF/DKIM/DMARC, and token authentication
Microsoft Entra SSPR now only accepts authentication methods users have explicitly registered. Use this Microsoft Graph PowerShell runbook to find users relying on directory phone attributes and remediate before the helpdesk queue explodes.
A production-ready PowerShell runbook to audit all Microsoft Entra dynamic groups and Administrative Units using the retired memberOf rule operator, preventing broken licensing and access policies.
A complete enterprise runbook covering the in-place upgrade path from Exchange Server 2019 to Exchange Server Subscription Edition (SE), prerequisite verification, and Active Directory prep.
A complete sysadmin guide to transitioning your Microsoft Graph PowerShell SDK automation from legacy Windows PowerShell 5.1 to modern PowerShell 7.x.
💼 Exchange Server Subscription Edition Licensing Explained: What's New, What's Gone Hey Exchange admins and licensing warriors In our last posts, we covered...
🔍 How to Log SSL/TLS Protocols in IIS for Exchange Server Hey Exchange admins Ever wondered which TLS protocols your clients are actually using to connect t...
📚 How to Plan Your Upgrade to Exchange Server Subscription Edition Welcome back, Exchange admins and hybrid champions Now that we know Exchange Server Subsc...
📢 Welcome Back Exchange Server: Subscription Edition Series Unpacked Hey IT Pros, Exchange admins, and hybrid warriors If you've been snoozing on Exchange S...
Why use " SMTP.SendAsApp "? In Azure AD Application grant to SMTP.SendAsApp doesn't grant permissions to send unless the full mailbox permissions is added to t...
In this post, we will understand what is ARC and why it is used. What is ARC? ARC is the authenticated received chain added in the email header by the inter...
Sender Policy Framework (SPF): Provides sender authentication for 5321.mailfrom address also known as P1 address and specifies the mail servers that are allowed...
This script provides statistics of email messages sent each day from a mailbox within the specific time frame, default is last one week, you can fetch up to 13...
With the growing use the teams the usage of Office 365 groups is increasing is most tenant, to mange the groups administrators and users need a way to clean up...
How to audit and export Entra ID sign-in logs for legacy basic authentication protocols (POP, IMAP, SMTP AUTH, Exchange ActiveSync) using the modern Microsoft Graph PowerShell SDK.
How to export an MFA methods and authentication registration report in Microsoft 365 using Microsoft Graph PowerShell (and historical MSOnline reference).