Exchange Hybrid Product Key Distribution Issue

Be advised of the following issue you may experience when working to migrate from on premises Exchange environment to Exchange Online and are planning to build an Exchange 2013 or 2016 server for the hybrid configuration. I had an experience very recently during a customer project where several attempts were made to acquire an Exchange hybrid product key and…

UPN Matching for Office 365

This past month I was tasked with integrating an on premises Active Directory (AD) and Exchange environment with an existing Office 365 tenant.  The difference between this project and all of the others I’d previously performed is that the customer’s Office 365 tenant only had a subscription for Office 365 ProPlus and the default domain was being…

References: Dynamic Distribution Groups and Exchange Hybrid

Below are several references about how dynamic distribution groups should be set up to work with Office 365 and Exchange in a hybrid configuration… Office 365 – Dynamic Distribution Groups in Exchange Hybrid Mystery of Dynamic Distribution Lists Exchange Hybrid Office 365 and Dynamic Distribution Groups in Hybrid Exchange Deployments Configure Dynamic Distribution Groups in a Hybrid Deployment…

Unable to Delete Mailbox Database

Recently, while decommissioning an Exchange 2013 server after a migrating from Exchange 2007 to Exchange 2013 and then to Exchange 2016, I received a familiar error when attempting to remove the last database from Exchange 2013 (see references at end of article). This mailbox database contains one or more mailboxes, mailbox plans, archive mailboxes, public folder mailboxes…