Public/Permissions/EXO/Get-EXODGPerms.ps1
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Function Get-EXODGPerms { <# .SYNOPSIS By default, creates permissions reports for all Distribution Groups with SendAs, SendOnBehalf and FullAccess delegates. .DESCRIPTION By default, creates permissions reports for all Distribution Groups with SendAs, SendOnBehalf and FullAccess delegates. Switches can be added to isolate one or more reports Also a file (or command) containing names of Users & Groups - used to isolate report to specific Distribution Groups. The file must contain users (and groups, as groups can have permissions to Distribution Groups). Creates individual reports for each permission type (unless skipped), and a report that combines all CSVs in chosen directory. Output CSVs headers: "Object","ObjectPrimarySMTP","Granted","GrantedPrimarySMTP","RecipientTypeDetails","Permission" .EXAMPLE Get-EXODGPerms -Tenant Contoso -ReportPath C:\PermsReports -Verbose .EXAMPLE Get-Recipient -Filter {EmailAddresses -like "*contoso.com"} -ResultSize Unlimited | Select -ExpandProperty name | Get-EXODGPerms -Tenant Contoso -ReportPath C:\PermsReports .EXAMPLE Get-EXODGPerms -Tenant Contoso -ReportPath C:\PermsReports -SkipFullAccess -Verbose .EXAMPLE Get-EXODGPerms -Tenant Contoso -ReportPath C:\PermsReports -SkipSendOnBehalf -Verbose .EXAMPLE Get-EXODGPerms -Tenant Contoso -ReportPath C:\PermsReports -SkipSendAs -SkipFullAccess -Verbose .PARAMETER ReportPath Parameter description .PARAMETER Tenant Parameter description .PARAMETER SpecificUsersandGroups Parameter description .PARAMETER SkipSendAs Parameter description .PARAMETER SkipSendOnBehalf Parameter description #> [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [System.IO.FileInfo] $ReportPath, [Parameter(Mandatory = $true)] [string] $Tenant, [Parameter()] [switch] $SkipSendAs, [Parameter()] [switch] $SkipSendOnBehalf, [Parameter(ValueFromPipeline = $true, Mandatory = $false)] [string[]] $SpecificUsersandGroups ) Begin { try { $null = Get-AcceptedDomain -ErrorAction Stop } catch { Connect-Cloud -Tenant $Tenant -ExchangeOnline } $allrecipients = [System.Collections.Generic.List[PSObject]]::new() } Process { New-Item -ItemType Directory -Path $ReportPath -ErrorAction SilentlyContinue if ($SpecificUsersandGroups) { $each = foreach ($CurUserGroup in $SpecificUsersandGroups) { $filter = {name -eq '{0}'} -f $CurUserGroup Get-Recipient -ResultSize Unlimited -Filter $filter -RecipientTypeDetails UserMailbox, RoomMailbox, EquipmentMailbox, SharedMailbox, MailUniversalDistributionGroup, MailUniversalSecurityGroup -ErrorAction SilentlyContinue } if ($each) { $allrecipients.add($each) } } else { $AllRecipients = Get-Recipient -ResultSize Unlimited -RecipientTypeDetails UserMailbox, RoomMailbox, EquipmentMailbox, SharedMailbox, MailUniversalDistributionGroup, MailUniversalSecurityGroup } } End { $AllDGDNs = ($allRecipients | Where-Object {$_.RecipientTypeDetails -in 'MailUniversalDistributionGroup', 'MailUniversalSecurityGroup'}).distinguishedname Write-Verbose "Caching hash tables needed" $RecipientHash = $AllRecipients | Get-RecipientHash $RecipientMailHash = $AllRecipients | Get-RecipientMailHash $RecipientDNHash = $AllRecipients | Get-RecipientDNHash $RecipientLiveIDHash = $AllRecipients | Get-RecipientLiveIDHash if (! $SkipSendAs) { Write-Verbose "Getting SendAs permissions for each Distribution Group and writing to file" $AllDGDNs | Get-EXOSendAsPerms -RecipientHash $RecipientHash -RecipientMailHash $RecipientMailHash -RecipientLiveIDHash $RecipientLiveIDHash | Export-csv (Join-Path $ReportPath ($tenant + "-EXODGPermissions_SendAs.csv")) -NoTypeInformation } if (! $SkipSendOnBehalf) { Write-Verbose "Getting SendOnBehalf permissions for each Distribution Group and writing to file" $AllDGDNs | Get-EXOSendOnBehalfPerms -RecipientHash $RecipientHash -RecipientMailHash $RecipientMailHash -RecipientDNHash $RecipientDNHash | Export-csv (Join-Path $ReportPath ($tenant + "-EXODGPermissions_SendOnBehalf.csv")) -NoTypeInformation } $AllPermissions = $null $AllPermissions = Get-ChildItem -Path $Report -Depth 0 -Include ($tenant + "-EXODGPermissions_SendAs.csv"), ($tenant + "-EXODGPermissions_SendOnBehalf.csv") -Recurse | % { import-csv $_ } $AllPermissions | Export-Csv (Join-Path $ReportPath ($tenant + "-EXODGPermissions_All.csv")) -NoTypeInformation Write-Verbose "Combined all CSV's into a single file named, EXODGPermissions_All.csv" } } |