Exchange SE

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Unable To Access OWA Externally Via WAP 2025 – Still Working On It

Posted on by Rhoderick Milne [MSFT]
Unable to Access OWA via WAP 2025 - Still Working On It

After upgrading Web Application Proxy (WAP) to Windows Server 2025 you may run into an issue with certain applications that are published via WAP to the Internet.  This issue will also happen if you build a net new environment for both WAP 2019 and newer.  This post discusses WAP 2025, but the same is more than likely going to happen with WAP 2022

In the below example the AD FS upgrade went well wi… Read the rest “Unable To Access OWA Externally Via WAP 2025 – Still Working On It”

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Lab–Move Exchange Server To New Tenant

Posted on by Rhoderick Milne [MSFT]

Moving a deployed Exchange hybrid environment to a brand new tenant is not something that is typically done.  In all of the years that I've worked with customers on hybrid, a second hand is not needed to count those instances.  The biggest reason for customers doing it was they did not like the tenant name, and wanted to change it.

In this case it was becase the tenant was being forcibly removed du… Read the rest “Lab–Move Exchange Server To New Tenant”

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Arbitration Mailboxes – Lay of The Land

Posted on by Rhoderick Milne [MSFT]

At this point in time, most Exchange administrators will have seen and worked with arbitration mailboxes.  Chances are that the first encounter was somewhat unexpected and revolved around an issue with Exchange 2013 health mailboxes or being unable to delete the default mailbox database in Exchange 2010.

To illustrate where the different arbitration mailboxes were first introduced, multiple ve… Read the rest “Arbitration Mailboxes – Lay of The Land”