Skip to main content

How To Series Sample 7 : Reverse Delegate Permissions and Rights Report

The script expands on part 5 of the how to series and produces a reverse permission report of the delegates of all Mailboxes on a server or within a Exchange Org or Exchange Online tenant. This is to help show for a particular delegate what mailboxes that they have been given delegate rights to and if they can see private Items and do they receive Meeting forwards. This script is designed to be run from within a Remote Powershell session that is already connected to your Exchange 2010 org (or from a Exchange Online/Office365 remote Powershell session).


 It uses Get-Mailbox to get all the mailboxes in your org and then it uses the EWS Managed API to connect to each mailbox and query the delegates. It then produces a CSV file that looks like



If you want to understand how it works have a read of the How To Series posts and hopefully you should be able to work out how to customize it if you need to for your own environment. The Script as posted uses EWS Impersonation

If you want to customize which mailboxes it reports on then just change the Get-Mailbox line

Get-Mailbox -ResultSize Unlimited | ForEach-Object{  

eg if you want to limit to only checking one server you could use

Get-Mailbox -ResultSize Unlimited -Server servernameblah | ForEach-Object{

You could do similar with other filter properties such as Database or OU

I've posted a downloadable copy of the script here the script itself look like

  1. ## EWS Managed API Connect Module Script written by Glen Scales  
  2. ## Requires the EWS Managed API and Powershell V2.0 or greator  
  3. $rptArray = New-Object System.Collections.ArrayList  
  4. ## Load Managed API dll  
  5. Add-Type -Path "C:\Program Files\Microsoft\Exchange\Web Services\1.1\Microsoft.Exchange.WebServices.dll"  
  6.   
  7. ## Set Exchange Version  
  8. $ExchangeVersion = [Microsoft.Exchange.WebServices.Data.ExchangeVersion]::Exchange2010_SP1  
  9.   
  10. ## Create Exchange Service Object  
  11. $service = New-Object Microsoft.Exchange.WebServices.Data.ExchangeService($ExchangeVersion)  
  12.   
  13. ## Set Credentials to use two options are availible Option1 to use explict credentials or Option 2 use the Default (logged On) credentials  
  14.   
  15. #Credentials Option 1 using UPN for the windows Account  
  16. $psCred = Get-Credential  
  17. $creds = New-Object System.Net.NetworkCredential($psCred.UserName.ToString(),$psCred.GetNetworkCredential().password.ToString())  
  18. $service.Credentials = $creds      
  19.   
  20. #Credentials Option 2  
  21. #service.UseDefaultCredentials = $true  
  22.   
  23. ## Choose to ignore any SSL Warning issues caused by Self Signed Certificates  
  24.   
  25. [System.Net.ServicePointManager]::ServerCertificateValidationCallback = {$true}  
  26.   
  27.   
  28.   
  29. function CovertBitValue($String){  
  30.     $numItempattern = '(?=\().*(?=bytes)'  
  31.     $matchedItemsNumber = [regex]::matches($String, $numItempattern)   
  32.     $Mb = [INT64]$matchedItemsNumber[0].Value.Replace("(","").Replace(",","")  
  33.     return [math]::round($Mb/1048576,0)  
  34. }  
  35.   
  36.   
  37. Get-Mailbox -ResultSize Unlimited | ForEach-Object{   
  38.     $MailboxName = $_.PrimarySMTPAddress.ToString()  
  39.     "Processing Mailbox : " + $MailboxName  
  40.     if($service.url -eq $null){  
  41.         ## Set the URL of the CAS (Client Access Server) to use two options are availbe to use Autodiscover to find the CAS URL or Hardcode the CAS to use  
  42.   
  43.         #CAS URL Option 1 Autodiscover  
  44.         $service.AutodiscoverUrl($MailboxName,{$true})  
  45.         "Using CAS Server : " + $Service.url   
  46.           
  47.         #CAS URL Option 2 Hardcoded  
  48.         #$uri=[system.URI] "https://casservername/ews/exchange.asmx"  
  49.         #$service.Url = $uri    
  50.     }  
  51.   
  52.     $service.ImpersonatedUserId = new-object Microsoft.Exchange.WebServices.Data.ImpersonatedUserId([Microsoft.Exchange.WebServices.Data.ConnectingIdType]::SmtpAddress, $MailboxName)  
  53.     $delegates = $service.getdelegates($MailboxName,$true)    
  54.     foreach($Delegate in $delegates.DelegateUserResponses){    
  55.         $rptObj = "" | select Delegate,Mailbox,Inbox,Calendar,Contacts,Tasks,Notes,Journal,MeetingMessages,ViewPrivateItems    
  56.         $rptObj.Mailbox = $MailboxName  
  57.         $rptObj.Delegate = $Delegate.DelegateUser.UserId.PrimarySmtpAddress    
  58.         $rptObj.Inbox = $Delegate.DelegateUser.Permissions.InboxFolderPermissionLevel    
  59.         $rptObj.Calendar = $Delegate.DelegateUser.Permissions.CalendarFolderPermissionLevel    
  60.         $rptObj.Contacts = $Delegate.DelegateUser.Permissions.ContactsFolderPermissionLevel    
  61.         $rptObj.Tasks = $Delegate.DelegateUser.Permissions.TasksFolderPermissionLevel    
  62.         $rptObj.Notes = $Delegate.DelegateUser.Permissions.NotesFolderPermissionLevel    
  63.         $rptObj.Journal = $Delegate.DelegateUser.Permissions.JournalFolderPermissionLevel    
  64.         $rptObj.ViewPrivateItems = $Delegate.DelegateUser.ViewPrivateItems    
  65.         $rptObj.MeetingMessages = $Delegate.DelegateUser.ReceiveCopiesOfMeetingMessages   
  66.         [Void]$rptArray.Add($rptObj)  
  67.             
  68.     }    
  69. }  
  70. $rptArray | Sort-Object Delegate | Export-Csv -Path c:\temp\ReverseDelegateReport.csv -NoTypeInformation  


Labels:

Popular posts from this blog

Export calendar Items to a CSV file using Microsoft Graph and Powershell

For the last couple of years the most constantly popular post by number of views on this blog has been  Export calendar Items to a CSV file using EWS and Powershell closely followed by the contact exports scripts. It goes to show this is just a perennial issue that exists around Mail servers, I think the first VBS script I wrote to do this type of thing was late 90's against Exchange 5.5 using cdo 1.2. Now it's 2020 and if your running Office365 you should really be using the Microsoft Graph API to do this. So what I've done is create a PowerShell Module (and I made it a one file script for those that are more comfortable with that format) that's a port of the EWS script above that is so popular. This script uses the ADAL library for Modern Authentication (which if you grab the library from the PowerShell gallery will come down with the module). Most EWS properties map one to one with the Graph and the Graph actually provides better information on recurrences then...
Read more

Downloading a shared file from Onedrive for business using Powershell

I thought I'd quickly share this script I came up with to download a file that was shared using One Drive for Business (which is SharePoint under the covers) with Powershell. The following script takes a OneDrive for business URL which would look like https://mydom-my.sharepoint.com/personal/gscales_domain_com/Documents/Email%20attachments/filename.txt This script is pretty simple it uses the SharePoint CSOM (Client side object Model) which it loads in the first line. It uses the URI object to separate the host and relative URL which the CSOM requires and also the SharePointOnlineCredentials object to handle the Office365 SharePoint online authentication. The following script is a function that take the OneDrive URL, Credentials for Office365 and path you want to download the file to and downloads the file. eg to run the script you would use something like ./spdownload.ps1 ' https://mydom-my.sharepoint.com/personal/gscales_domain_com/Documents/Email%20attachments/filen...
Read more

Sending a MimeMessage via the Microsoft Graph using the Graph SDK, MimeKit and MSAL

One of the new features added to the Microsoft Graph recently was the ability to create and send Mime Messages (you have been able to get Message as Mime for a while). This is useful in a number of different scenarios especially when trying to create a Message with inline Images which has historically been hard to do with both the Graph and EWS (if you don't use MIME). It also opens up using SMIME for encryption and a more easy migration path for sending using SMTP in some apps. MimeKit is a great open source library for parsing and creating MIME messages so it offers a really easy solution for tackling this issue. The current documentation on Send message via MIME lacks any real sample so I've put together a quick console app that use MSAL, MIME kit and the Graph SDK to send a Message via MIME. As the current Graph SDK also doesn't support sending via MIME either there is a workaround for this in the future my guess is this will be supported.
Read more
All sample scripts and source code is provided by for illustrative purposes only. All examples are untested in different environments and therefore, I cannot guarantee or imply reliability, serviceability, or function of these programs.

All code contained herein is provided to you "AS IS" without any warranties of any kind. The implied warranties of non-infringement, merchantability and fitness for a particular purpose are expressly disclaimed.