Keep calm and SendAs a Proxy Address

I’m gonna channel the great Etta James:

Ok, I’m back.

I’ve been waiting for this feature for what seems like an eternity–the ability for a mailbox that has multiple proxy addresses to send from any of those addresses.

Background

As most of you probably know, a mailbox can have a whole lot of additional SMTP addresses associated with it (a mailbox can have up to 400 proxy addresses stamped on it). … [ Continue reading ]

Update to AAD Network Communications Test

It’s literally been a year since I’ve updated it–mainly because we haven’t made any significant endpoint changes.

I did detect some CRL endpoint updates and a few other odds and ends for Worldwide Commercial and GCC Moderate, so I’ve updated the AAD Network Communications Test tool accordingly.… [ Continue reading ]

Migrated Disable-SkyplePlugin Tool

In order to help our customers (and their users) fully transition from Skype for Business to Microsoft Teams, I’ve updated the Disable-SkypePlugin script that I published back in 2020 and put it on the PowerShell Gallery.

As we encounter more and more customers still working remotely, helping enable them use the most modern tools (like Microsoft Teams) is critically important. … [ Continue reading ]

Exchange Function to Test MRSProxy Endpoint Authentication

This week, I was helping someone troubleshoot authentication issues when hybrid migration mailboxes to Exchange Online.

In order to migrate a mailbox successfully, the EWS endpoint virtual directory should have NTLM/Negotiate authentication method available.

You can quickly see what the endpoint is showing available by using this function:

Function Test-MigrationEndpointAuthentication($Url)
{
  # Build URL
  $Url = $Url.TrimEnd('.').TrimEnd('/').TrimEnd('.')
[ Continue reading ]

Technet Gallery Tool Migration

As I mentioned in my previous post, I’ve been trudging towards migrating the 60 or so tools, modules, and scripts I published on the now-retired TechNet Gallery over to the PowerShell Gallery.

I want to make sure I migrate the things that people find most useful–so far, I’m about halfway and wanted to do a quick check-in:

PowerShell Gallery | Packages matching atguilmette

Let me know what tools you’re looking for and I’ll prioritize getting those up!… [ Continue reading ]

Office 365 Service Communications API PowerShell Script

In light of some recent events, I thought I’d build on another project I have going on and drop this quick script here for talking to the Office 365 Service Communications API.

Background

The Office 365 Service Communications API is a REST-based interface to retrieve data from the service. … [ Continue reading ]