Configuration

Block direct delivery to @onmicrosoft.com addresses in a hybrid environment

UPDATE: [11/20/2018] I had an error in the transport rule configuration in the last example, as well as a note that a TR would NDR external traffic.  I have this post accordingly.

We’re all familiar with how Office 365 tenants work–when you spin up a new Office 365 tenant, you get a managed domain (tenant.onmicrosoft.com). … [ Continue reading ]

Information

Office 365 Administration Inside Out

I meant to post this earlier, but I wanted to let everyone know that I’ve had the great honor of being able to write a book with some of the titans of Microsoft Consulting Services.  The book has all new content for Office 365 based on our experience in the field, and even features current service release updates. … [ Continue reading ]

Configuration

Sign an exported certificate from an F5

I’ve run into this delightful scenario a few times–the network team generates CSRs and certificates for the environment, and since they want to do SSL termination on their network devices, complete the certificate process there.  When you ask for an export of the certificate from, say, an F5, they will just give you the unsigned certificate–so that when you import it into your server, you end up with something unusable, since it has no private key.… [ Continue reading ]

Client

Subscribe to the Office 365 Service Health Dashboard RSS Feed in Outlook

*UPDATE* We have deprecated the Service Health Dashboard RSS Feed. For service health updates, you can go to https://portal.office.com/adminportal/home#/servicestatus.

Periodically, services in Office 365 may become affected by a number of things (network availability, regional network disruptions, upgrades to the service environment, etc).… [ Continue reading ]

Client

What is WinRM?

What is WinRM?

WinRM, for those of you not in the know, is really the Microsoft answer to an age-old problem in the Windows world–remote command and task execution.  It’s the Windows equivalent of the Unix rsh, a native implementation of the PsExec (albeit, with the added complexity that seeps into nearly all Microsoft technologies). … [ Continue reading ]

Information

Error uninstalling Exchange Server 2003: One or more users currently use a mailbox store on this server.

So, you’re transitioning your Exchange 2003 environment to an Office 365 environment and desperately want to drop kick your Exchange 2003 server out the door.  After migrating everyone’s email, you open ESM, delete all of the mailboxes and start to uninstall Exchange. … [ Continue reading ]

Client

Boot from VHD is Wicked Awesome

Boot from VHD is a great technology that enables you to host multiple self-contained operating systems on a single hard drive. Similar to dual-booting, but you don’t have to worry about installing applications over each other or overwriting program file updates because your secondary OS is fully contained within a single virtual hard disk file. … [ Continue reading ]

Information

Rebuild a Corrupt WMI Repository

From time to time, many administrators have found themselves faced with a corrupt WMI repository. Here’s a quick fix. Copy/paste into a .bat file and run on the affected computer.

NET STOP WINMGMT /y

RD /S /Q C:\Windows\system32\wbem\Repository

%windir%\system32\rundll32 wbemupgd,UpgradeRepository

FOR %%i in (%windir%\system32\wbem\*.dll)
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