Public/Permissions/EXO/Get-EXOMailboxPerms.ps1
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Function Get-EXOMailboxPerms { <# .SYNOPSIS By default, creates permissions reports for all mailboxes with SendAs, SendOnBehalf and FullAccess delegates. .DESCRIPTION By default, creates permissions reports for all mailboxes 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 mailboxes. The file must contain users (and groups, as groups can have permissions to mailboxes). Creates individual reports for each permission type (unless skipped), and a report that combines all CSVs in chosen directory. Output CSVs headers: "Mailbox","MailboxPrimarySMTP","Granted","GrantedPrimarySMTP","RecipientTypeDetails","Permission" .EXAMPLE Get-EXOMailboxPerms -Tenant Contoso -ReportPath C:\PermsReports -Verbose .EXAMPLE Get-Recipient -Filter {EmailAddresses -like "*contoso.com"} | Select -ExpandProperty name | Get-EXOMailboxPerms -Tenant Contoso -ReportPath C:\PermsReports .EXAMPLE Get-EXOMailboxPerms -Tenant Contoso -ReportPath C:\PermsReports -SkipFullAccess -Verbose .EXAMPLE Get-EXOMailboxPerms -Tenant Contoso -ReportPath C:\PermsReports -SkipSendOnBehalf -Verbose .EXAMPLE Get-EXOMailboxPerms -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 .PARAMETER SkipFullAccess Parameter description #> [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [System.IO.FileInfo] $ReportPath, [Parameter(Mandatory = $true)] [string] $Tenant, [Parameter()] [switch] $SkipSendAs, [Parameter()] [switch] $SkipSendOnBehalf, [Parameter()] [switch] $SkipFullAccess, [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 { $AllMailboxDNs = ($allRecipients | Where-Object {$_.RecipientTypeDetails -in 'UserMailbox', 'RoomMailbox', 'EquipmentMailbox', 'SharedMailbox'}).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 mailbox and writing to file" $allMailboxDNs | Get-EXOSendAsPerms -RecipientHash $RecipientHash -RecipientMailHash $RecipientMailHash -RecipientLiveIDHash $RecipientLiveIDHash | Export-csv (Join-Path $ReportPath ($tenant + "-EXOPermissions_SendAs.csv")) -NoTypeInformation } if (! $SkipSendOnBehalf) { Write-Verbose "Getting SendOnBehalf permissions for each mailbox and writing to file" $AllMailboxDNs | Get-EXOSendOnBehalfPerms -RecipientHash $RecipientHash -RecipientMailHash $RecipientMailHash -RecipientDNHash $RecipientDNHash | Export-csv (Join-Path $ReportPath ($tenant + "-EXOPermissions_SendOnBehalf.csv")) -NoTypeInformation } if (! $SkipFullAccess) { Write-Verbose "Getting FullAccess permissions for each mailbox and writing to file" $AllMailboxDNs | Get-EXOFullAccessPerms -RecipientHash $RecipientHash -RecipientMailHash $RecipientMailHash -RecipientLiveIDHash $RecipientLiveIDHash | Export-csv (Join-Path $ReportPath ($tenant + "-EXOPermissions_FullAccess.csv")) -NoTypeInformation } $AllPermissions = $null $AllPermissions = Get-ChildItem -Path $Report -Depth 0 -Include ($tenant + "-EXOPermissions_FullAccess.csv"), ($tenant + "-EXOPermissions_SendOnBehalf.csv"), ($tenant + "-EXOPermissions_SendAs.csv") -Recurse | % { import-csv $_ } $AllPermissions | Export-Csv (Join-Path $ReportPath ($tenant + "-EXOPermissions_All.csv")) -NoTypeInformation Write-Verbose "Combined all CSV's into a single file named, AllEXOPermissions.csv" } } |