Skip to main content

Showing the Calendar Configuration of a Mailbox or Meeting Room using EWS

When you configure Calendar processing settings in Exchange either using the Exchange Administrator Centre via the Exchange Management Shell (Set-CalendarProcessing) many of these setting get held in a FAI (Folder Associated Item) in the Calendar Folder of the Mailbox in question. In EWS you can access these configuration objects using the UserConfiguration operation and classes.

The Calendar settings are stored in the Roaming Dictionary format to store each of the different Key and Value pairs. For some of the settings like the bookin policy (In-policy meeting requests) and (Out-of-policy meeting requests) these are stored as an array of ExchangeDn's.

I've put together a script cmdlet called Show-CalendarSettings that can dump out the Roaming dictionary setting for a Calendar Configuration object using EWS. And also for the BookIn and RequestIn policy it will loop through each of the ExchangeDn's in the array and try to resolve each of the entries via ResolveName . All the configuration information is written to file and the results of the ResolveName is written along with the result (eg valid if it resolves couldn't resolve if not). eg it produces an output like




  I've put the script on GitHub here https://github.com/gscales/Powershell-Scripts/blob/master/DumpCalSettings.ps1 and the script itself look like

function Show-CalendarSettings
{
    param( 
     [Parameter(Position=0, Mandatory=$true)] [string]$MailboxName,
  [Parameter(Position=1, Mandatory=$true)] [System.Management.Automation.PSCredential]$Credentials,
  [Parameter(Position=2, Mandatory=$false)] [switch]$useImpersonation,
  [Parameter(Position=3, Mandatory=$false)] [string]$url
    )  
  Begin
 {
  $service = Connect-Exchange -MailboxName $MailboxName -Credentials $Credentials
  if($useImpersonation.IsPresent){
   $service.ImpersonatedUserId = new-object Microsoft.Exchange.WebServices.Data.ImpersonatedUserId([Microsoft.Exchange.WebServices.Data.ConnectingIdType]::SmtpAddress, $MailboxName)
  }
  # Bind to the Calendar Folder
  $folderid= new-object Microsoft.Exchange.WebServices.Data.FolderId([Microsoft.Exchange.WebServices.Data.WellKnownFolderName]::Calendar,$MailboxName)   
  $Calendar = [Microsoft.Exchange.WebServices.Data.Folder]::Bind($service,$folderid)
  $UsrConfig = [Microsoft.Exchange.WebServices.Data.UserConfiguration]::Bind($service, "Calendar", $Calendar.Id, [Microsoft.Exchange.WebServices.Data.UserConfigurationProperties]::All)  
  #$UsrConfig.Dictionary
  $rptCollection = @()
  foreach($cnfObj in $UsrConfig.Dictionary.Key){
   $rptObj = "" | Select Property,Value,Valid
   $rptObj.Property = $cnfObj
   $rptObj.Valid = "Ok"
   $rptObj.Value = $UsrConfig.Dictionary[$cnfObj]
   $rptCollection +=$rptObj
   if($cnfObj -eq "BookInPolicyLegDN")
   {
    foreach($LegDn in $UsrConfig.Dictionary["BookInPolicyLegDN"])
    {
        $ncCol = $service.ResolveName($LegDn, [Microsoft.Exchange.WebServices.Data.ResolveNameSearchLocation]::DirectoryOnly, $false);
           if($ncCol.Count -gt 0){
      #Write-output ("Found " + $ncCol[0].Mailbox.Address)
      $rptObj = "" | Select Property,Value,Valid
      $rptObj.Property = "BookInPolicyValue"
      $rptObj.Value = $ncCol[0].Mailbox.Address
      $rptObj.Valid = "Ok"
      $rptCollection +=$rptObj
           }
     else
     { 
      #Write-Output "Couldn't resolve " + $LegDn
      $rptObj = "" | Select Property,Value,Valid
      $rptObj.Property = "BookInPolicyValue"
      $rptObj.Value = $LegDn
      $rptObj.Valid = "Couldn't resolve"
      $rptCollection +=$rptObj
     }
     
    } 
   }
   if($cnfObj -eq "RequestInPolicyLegDN")
   {
    foreach($LegDn in $UsrConfig.Dictionary["RequestInPolicyLegDN"])
    {
        $ncCol = $service.ResolveName($LegDn, [Microsoft.Exchange.WebServices.Data.ResolveNameSearchLocation]::DirectoryOnly, $false);
           if($ncCol.Count -gt 0){
      #Write-output ("Found " + $ncCol[0].Mailbox.Address)
      $rptObj = "" | Select Property,Value,Valid
      $rptObj.Property = "RequestInPolicyValue"
      $rptObj.Value = $ncCol[0].Mailbox.Address
      $rptObj.Valid = "Ok"
      $rptCollection +=$rptObj
           }
     else
     { 
      #Write-Output "Couldn't resolve " + $LegDn
      $rptObj = "" | Select Property,Value,Valid
      $rptObj.Property = "RequestInPolicyValue"
      $rptObj.Value = $LegDn
      $rptObj.Valid = "Couldn't resolve"
      $rptCollection +=$rptObj
     }
     
    }   
   }
  }
  Write-Output $rptCollection
   
  $rptCollection | Export-Csv -Path ("$MailboxName-CalendarSetting.csv") -NoTypeInformation
 }
}

Labels:

Popular posts from this blog

Exporting and Uploading Mailbox Items using Exchange Web Services using the new ExportItems and UploadItems operations in Exchange 2010 SP1

Two new EWS Operations ExportItems and UploadItems where introduced in Exchange 2010 SP1 that allowed you to do a number of useful things that where previously not possible using Exchange Web Services. Any object that Exchange stores is basically a collection of properties for example a message object is a collection of Message properties, Recipient properties and Attachment properties with a few meta properties that describe the underlying storage thrown in. Normally when using EWS you can access these properties in a number of a ways eg one example is using the strongly type objects such as emailmessage that presents the underlying properties in an intuitive way that's easy to use. Another way is using Extended Properties to access the underlying properties directly. However previously in EWS there was no method to access every property of a message hence there is no way to export or import an item and maintain full fidelity of every property on that item (you could export the...
Read more

The MailboxConcurrency limit and using Batching in the Microsoft Graph API

If your getting an error such as Application is over its MailboxConcurrency limit while using the Microsoft Graph API this post may help you understand why. Background   The Mailbox  concurrency limit when your using the Graph API is 4 as per https://docs.microsoft.com/en-us/graph/throttling#outlook-service-limits . This is evaluated for each app ID and mailbox combination so this means you can have different apps running under the same credentials and the poor behavior of one won't cause the other to be throttled. If you compared that to EWS you could have up to 27 concurrent connections but they are shared across all apps on a first come first served basis. Batching Batching in the Graph API is a way of combining multiple requests into a single HTTP request. Batching in the Exchange Mail API's EWS and MAPI has been around for a long time and its common, for email Apps to process large numbers of smaller items for a variety of reasons.  Batching in the Gr...
Read more

EWS-FAI Module for browsing and updating Exchange Folder Associated Items from PowerShell

Folder Associated Items are hidden Items in Exchange Mailbox folders that are commonly used to hold configuration settings for various Mailbox Clients and services that use Mailboxes. Some common examples of FAI's are Categories,OWA Signatures and WorkHours there is some more detailed documentation in the https://msdn.microsoft.com/en-us/library/cc463899(v=exchg.80).aspx protocol document. In EWS these configuration items can be accessed via the UserConfiguration operation https://msdn.microsoft.com/en-us/library/office/dd899439(v=exchg.150).aspx which will give you access to either the RoamingDictionary, XMLStream or BinaryStream data properties that holds the configuration depending on what type of FAI data is being stored. I've written a number of scripts over the years that target particular FAI's (eg this one that reads the workhours  http://gsexdev.blogspot.com.au/2015/11/finding-timezone-being-used-in-mailbox.html is a good example ) but I didn't have a gene...
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.