When looking at the title of this post, one might notice I used a target word, and it is on purpose. This script below is useful when trying to remove all types of messages from users' mailboxes whether it's a spam, scam, virus or a an important message that needs to be "recalled". This script is based on Search-Mailbox cmdlet, works well but it has its own pros and cons, more on some of them below. Later I will have another post showing a different and more advanced script to do the same and even better. So stay tuned. Pros: Doesn't search through Purged Items (a bit more about the 3rd layer of Trash is here - https://365basics.com/script-to-search-through-recoverable-and-purged-items-and-restore-those/ ). Can copy messages to another mailbox (IT Help in that example). Cons: Per Microsoft Search-Mailbox will be depreciated, we don't know when it will happen though. Slow (if a target message…

There is an amazing article (https://itpro.outsidesys.com/2017/11/06/exchange-configuring-the-resource-booking-attendant-with-powershell/) published by John Dougherty on how to adjust resource booking configuration having 4 different scenarios. Those 4 scenarios are: Anyone can book the resource. No delegate approval required. Anyone can book the resource. Delegate approval required for all requests. Only a list of people can book the resource without delegate approval. All others require delegate approval. Only a list of people can book the resource. All others are denied. There are no delegates. Not everything can be done through an Admin portal, that's why having such a PowerShell script is crucial. I decided to do several things to improve that process: Added code to check an existing configuration for every single Room and Resource. If the configuration is any different than these 4 above, then the script notifies you about it. Combined scripts into a single one. Added more user input to not adjust the…

This PowerShell script has two use cases combined in it - ADD and REPLACE. Before any change is made the script also shows a group membership for both a target and a source users. Note, the script only processes those distribution groups that are managed in the cloud. If you have some groups synced with Active Directory, those should be processed separately. USE CASE #1 - ADD When Add is chosen, the scripts only adds distribution groups of the source user to the target user's list. Use this part of the script when a target user assumes new responsibilities that another user has but keeps the old responsibilities as well. In other words, the target user needs to have a combination of new and old distribution groups to perform job tasks. USE CASE #2 - REPLACE Essentially, the 2nd part of the script is a combination of the 1st part…

The purpose of this PowerShell script is to remove a user from all distribution groups. The script is interactive, it will show the list of groups first, then you have an option to process your request. While the same can be done using Exchange Admin or Microsoft 365 Admin Center, it is much faster using PowerShell. Note, the script only processes those distribution groups that are managed in the cloud. If you have some groups synced with Active Directory, those should be processed separately. $email = Read-Host "Please provide a user's email address to remove from all distribution groups" $mailbox = Get-Mailbox -Identity $email $DN=$mailbox.DistinguishedName $Filter = "Members -like ""$DN""" $DistributionGroupsList = Get-DistributionGroup -ResultSize Unlimited -Filter $Filter Write-host `n Write-host "Listing all Distribution Groups:" Write-host `n $DistributionGroupsList | ft $answer = Read-Host "Would you like to proceed and remove $email from all distribution groups ( y / n )?" While…

There are times when your company needs to keep a list of Corporate Contacts that are used by your own users on a daily basis. You can find them in Microsoft 365 Admin Center - Users - Contacts or Exchange Admin Center - Recipients - Contacts. It gets more complicated when those contacts are added to several Distribution Lists, more so when they are mixed with your users. The issue is that unlike working with Internal Users, you cannot open a contact and see which groups it belongs to. This is where PowerShell comes handy. The script below finds every single contact and all groups it belongs to (if any). To show the result I use a Grid View (Out-GridView) because it provides an easy column sorting and filtering. This script might help to find a user error if some contact should or should not be in a group. Side…