Added Files

Powershell/PowerShell-Office365Admin/ExchangeWithMFA/GetDistributionGroupsAndMembers.ps1

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+# Find shared mailboxes on the basis of their email domain and lists of who has access to them
+#
+# Uses the new PowerShell "module" that support MFA.
+#
+
+# Where to save the CSV files to
+$outputFile = 'C:\Temp\GroupDetails.csv'
+
+# Wildcard for groups to find
+$searchWildcard = '*@example.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 all the groups we're looking for
+$allGroups = Get-DistributionGroup | Where-Object {$_.PrimarySmtpAddress -like $searchWildcard}
+
+# Initialise the hash table to store results in
+$groupDetails = @()
+
+# Run through the groups getting the members and adding 
+foreach ($group in $allGroups) {
+    $groupMembers = (Get-DistributionGroupMember -Identity $group.Name).Alias -join '; '
+    $groupDetails += [PSCustomObject]@{
+        'GroupName' = $group.Name;
+        'GroupEmail' = $group.PrimarySmtpAddress;
+        'GroupType' = $group.GroupType;
+        'GroupMembers' = $groupMembers
+    }
+}
+
+# Export results to CSV file
+$groupDetails | Export-Csv -Path $outputFile -NoTypeInformation
+
+# End the Exchange Session
+Get-PSSession | Where-Object {$_.ComputerName -eq 'outlook.office365.com'} | Remove-PSSession