Public/Group/Get-DistributionGroupMembership.ps1
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function Get-DistributionGroupMembership { [CmdletBinding(SupportsShouldProcess = $true)] param( [Parameter( Mandatory = $true, ValueFromPipeline = $True, ValueFromPipelineByPropertyName = $True )] [string[]]$Identity, [switch]$Recurse, [string[]]$Processed ) begin { if (-not $processed) { $Processed = @() } } process { foreach ($CurIdentity in $Identity) { if (-not $PSCmdlet.ShouldProcess($CurIdentity)) { continue } Write-Verbose "Looking up memberships for '$CurIdentity'." try { $Recipient = Get-Recipient -Identity $CurIdentity -ErrorAction Stop } catch { $ErrorMessage = $_.exception.message $Message = "Unable to find recipient '{0}': {1}" -f $CurIdentity, $ErrorMessage Write-Error $Message continue } Write-Verbose "Adding '$($Recipient.PrimarySmtpAddress)' to processed list" $Processed += $Recipient.PrimarySmtpAddress $Results = @() $Filter = "members -eq '{0}'" -f $Recipient.DistinguishedName Get-Group -ResultSize Unlimited -filter $Filter | Where-Object {$_.WindowsEmailAddress -notin $Processed} | ForEach-Object { $_ $Results += $_ } if (-not $Recurse) { continue } Foreach ($Result in $Results) { #Skip "Office 365 Groups" as they fail recipient checks and cannot be members of other groups if ($Result.RecipientTypeDetails -in 'NonUniversalGroup', 'GroupMailbox') { Continue } Write-Verbose "Start recursing for '$($Result.WindowsEmailAddress)'." Get-DGMembership -Identity $Result.Guid.ToString() -Recurse -Processed $Processed Write-Verbose "Done recursing for '$($Result.WindowsEmailAddress)'." }#End Foreach result } #End Foreach Identity } #End Process } #End Function |