Configuration

Disable Office 365 Groups Creation

Update: There are new cmdlets available for this task.  This blog is for historical reference only.  A new, updated process is available here (https://www.undocumented-features.com/2017/04/29/disable-office-365-groups-creation-redux/).

Office 365 Groups are a (somewhat) new feature that act both like a distribution list and a public folder or shared mailbox. … [ Continue reading ]

Scripting

Testing for bad SMTP Addresses

While working on my latest project,  I encountered a significant number of objects with malformed SMTP addresses.  These appeared to have been objects that had been somehow manually modified over the years by directly writing to the proxyAddresses attribute in Active Directory, bypassing an API that would check for correctly-formatted addresses.… [ Continue reading ]

Configuration

Creating a Pinpoint DNS Zone

I saw an interesting question floating around a discussion alias earlier today–how to return different IP addresses for the same hostname from different DNS servers for users that are in different regions (for example, have DNS servers on the east coast return “1.2.3.4”… [ Continue reading ]

Identity

Remove an unwanted ProxyAddress pattern from users via AADConnect

I had an interesting request from a customer the other day where they were synchronizing Active Directory into two disparate environments–Office 365 and another hosted Exchange environment.  In their new Office 365 environment, they didn’t want any address proxies matching a particular pattern to be part of a user’s proxyAddress array–BUT–they also didn’t want to remove them from their on-premises accounts since they are being used by their other hosting environment as an application routing address.… [ Continue reading ]

Configuration

Office 365 License Assignment

There is perpetually a lot of angst around licensing users for Office 365 workloads.  Most of my customers over the years have wanted to ease into deployment, only enabling certain services at a time.  Of course, as an evergreen service, we are always adding features, leading to new service plans to disable as you discover them.… [ 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 ]

Configuration

Using XML to Backup and Restore Office 365 Settings

Frequently, I am asked to make changes to a customer's environment.  I'm a belt and suspenders kind of guy, so my backups have backups.  At any rate, normally when I am performing changes in a tenant (or Exchange on-premises environment, for that matter), I make two sets of backups–one by piping a Get-cmdlet to Export-CSV (so I have a readable copy), and one by piping the same Get-cmdlet to Export-Clixml (so I have a way to set the nodes as parameters and import them back).… [ Continue reading ]

Configuration

Customizing the Windows PowerShell Console

Another blog on customizing the PowerShell console?  Really?

Yes.  This is actually what I use on a day-to-day basis as a consultant managing many projects at once.  I find that I’m usually running various PowerShell sessions concurrently and having to keep which one is which can be difficult without having to stop and check which server or Office 365 tenant I’m connect to, or what type of activity I’m performing.… [ Continue reading ]

Scripting

Wipe Content from an Exchange Online Mailbox

This tool has been updated with new options.  See https://www.undocumented-features.com/2017/10/19/update-to-wipe-exchange-online-mailbox-script/.

Periodically over the years, I’ve run into content problems trying to migrate data to Exchange Online using third-party migration tools–they somehow get stuck, don’t like something existing in the destination mailbox (or didn’t write it properly in the first place) and you need a clean mailbox to restart the process. … [ Continue reading ]