Added Files

Powershell/PowerShell-Office365Admin/ExchangeWithMFA/FindUsersWithMismatchedDomains.ps1

@@ -0,0 +1,15 @@
+# Find mailboxes where UPN domain doesn't match email domain
+#
+
+# Find and load the new ExO "module"
+$exoModulePath = (Get-ChildItem -Path $env:userprofile -Filter CreateExoPSSession.ps1 -Recurse -Force -ErrorAction SilentlyContinue).DirectoryName[-1]
+. "$exoModulePath\CreateExoPSSession.ps1"
+
+# Establish a session to Exchange Online
+Connect-EXOPSSession
+
+# Get list of mailboxes with a different mail domain to UPN domain
+Get-Mailbox -ResultSize Unlimited | Where-Object {$_.UserPrincipalName.Split('@')[1] -ne $_.PrimarySmtpAddress.Split('@')[1]} | Format-Table Name,UserPrincipalName,PrimarySmtpAddress,RecipientTypeDetails
+
+# End the Exchange Session
+Get-PSSession | Where-Object {$_.ComputerName -eq 'outlook.office365.com'} | Remove-PSSession