EXO Migration Without a Remote Move

How to provision on-premises Exchange mailboxes in a controlled manner as new, empty Exchange Online mailboxes: PST backup, CSV approval, RemoteMailbox, synchronization, validation, and rollback.

August 7, 2026 Exchange OnPrem / Hybrid 12 min read

HIN Platform Renewal 2026: Access Gateway, Client, and Deadlines Through September 14

Firewall approval by August 14, Access Gateway version 4 from August 17, SAML endpoints, hardware tokens, and HIN Client by September 14. The mail gateway is not affected and will be replaced separately.

August 1, 2026 HIN Gateway 5 min read

Microsoft Entra Domain Services: LDAP and Kerberos for Cloud-Only Environments

Entra ID does not speak LDAP or Kerberos. Microsoft Entra Domain Services provides a managed Active Directory domain that synchronizes users from Entra ID and offers traditional protocols. How it works, limitations, costs, and a real-world email gateway use case.

July 30, 2026 Active Directory / Entra 8 min read

Entra Connect Sync 2.6.84.0: What’s Changing and Who Should Update Now

The security release brings Passkey support and changes to app authentication, PowerShell, and Password Hash Sync. The previous version was withdrawn, so the update requires a phased decision.

July 17, 2026 Microsoft Entra 11 min read

Properly follow up on the July 2026 Exchange security updates

Two cleanup tasks are needed after installation: safely remove the old CVE-2026-42897 mitigation and review overprivileged legacy groups in Active Directory.

July 14, 2026 Exchange updates (SU & CU) 6 min read