Skip to main content

Setting the Out of Office (OOF) with powershell and the EWS Managed API

Along with the RC of Exchange 2010 this week the RC of the EWS Managed API made its debut. There are a number of changes some of which break a few of the scripts i've posted here there is full list of the changes on http://social.technet.microsoft.com/Forums/en-US/exchangesvrdevelopment/thread/7053c628-9227-4cd5-ba9d-ed6fe8d484cb. But the good thing is now OOF and Freebusy work and the DNS lookup for autodisover is another major improvement.

Setting the OOF is pretty easy with the API lets look at a few examples as before you first need to create a Service object and authenticate if you haven't used the EWS Managed API in Powershell before see this post as a primer. To use this OOF code you first need to download and install the RC version of the ManagedAPI from here.

So lets take it as read we have our $service object now to get the Offsettings its just one call with the email address of the Account you want to pull the settings for.

$oofSetting = $service.GetUserOofSettings("user@domain.com")

A good point to remember when using any of the availability service Call like OOF and FreeBusy you need to always use delegate Access as EWS impersonation doesn't work with the availability service.

To show the OOF state just look at the State property

$oofSetting.State.ToString()

To show the oof message you have to look at the InternalReply or ExternalReply properties

$oofSetting.InternalReply.ToString()
$oofSetting.ExternalReply.ToString()

To set the State and or the Message property you should first get the current setting modify the property you want to modify and then update the OOF.

eg to set the OOF of the currently logged on user you could use the following code.



$dllpath = "C:\Program Files\Microsoft\Exchange\Web Services\1.0\Microsoft.Exchange.WebServices.dll"
[void][Reflection.Assembly]::LoadFile($dllpath)
$service = New-Object Microsoft.Exchange.WebServices.Data.ExchangeService([Microsoft.Exchange.WebServices.Data.ExchangeVersion]::Exchange2007_SP1)

$windowsIdentity = [System.Security.Principal.WindowsIdentity]::GetCurrent()
$sidbind = "LDAP://<SID=" + $windowsIdentity.user.Value.ToString() + ">"
$aceuser = [ADSI]$sidbind

$service.AutodiscoverUrl($aceuser.mail.ToString())

$oofSetting = $service.GetUserOofSettings($aceuser.mail.ToString())
$oofSetting.State.ToString()
$oofSetting.InternalReply = new-object Microsoft.Exchange.WebServices.Data.OofReply("Test 123")
$oofSetting.ExternalReply.ToString()
$oofSetting.State = [Microsoft.Exchange.WebServices.Data.OofState]::Enabled
$service.SetUserOofSettings($aceuser.mail.ToString(), $oofSetting);

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...

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...

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.
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.