From ef5c020e5e6a526777c7cecf91561a32cea07bd9 Mon Sep 17 00:00:00 2001
From: Tom Wechsler <tom.wechsler@outlook.com>
Date: Mon, 17 Oct 2022 05:21:49 +0200
Subject: [PATCH] new file

---
 Manage_Exchange_Online.ps1 | 124 +++++++++++++++++++++++++++++++++++++
 1 file changed, 124 insertions(+)
 create mode 100644 Manage_Exchange_Online.ps1

diff --git a/Manage_Exchange_Online.ps1 b/Manage_Exchange_Online.ps1
new file mode 100644
index 0000000..0d6f238
--- /dev/null
+++ b/Manage_Exchange_Online.ps1
@@ -0,0 +1,124 @@
+Set-Location C:\Scripte
+Clear-Host
+
+#Change the ExecutionPolicy
+Set-ExecutionPolicy -ExecutionPolicy Unrestricted
+
+#We need the module (without the parameter for a specific version)
+Install-Module -Name ExchangeOnlineManagement -AllowClobber -Force -Verbose
+
+#Let's import the module
+Import-Module ExchangeOnlineManagement
+
+#Check the version (if you have not selected a version)
+Get-InstalledModule -Name ExchangeOnlineManagement
+
+#Now we connect to Exchange Online
+Connect-ExchangeOnline
+
+#This example gets the configuration information for the cloud-based organization.
+Get-OrganizationConfig | Export-CliXML C:\Scripte\Cloudtrain.xml
+
+
+#Use the New-DistributionGroup cmdlet to create distribution groups and mail-enabled security groups.
+#This example creates a mail-enabled security group named Managers without specifying any members
+New-DistributionGroup -Name "IT-Techniker" -Type "Security"
+
+#This example creates a distribution group named ITDepartment and specifies the members.
+New-DistributionGroup -Name "ITDepartment" -Members chris.green@cloudtrain.ch,harry.styles@cloudtrain.ch
+
+#The IgnoreNamingPolicy switch specifies whether to prevent this group from being affected by your organization's group naming policy
+New-DistributionGroup -Name "Verteiler-Alle" -IgnoreNamingPolicy
+
+
+#Configure the external postmaster address in Exchange Online
+#Let's look at the values of the Organization
+Get-TransportConfig | Format-List
+
+#Is there a value at ExternalPostmasterAddress
+Get-TransportConfig | Select-Object ExternalPostmasterAddress
+
+#No value means that the postmaster address is used
+(Get-TransportConfig).ExternalPostmasterAddress
+
+#This example sets the external postmaster address to the value:support@cloudgrid.ch
+Set-TransportConfig -ExternalPostmasterAddress support@cloudtrain.ch
+
+#Did it work?
+Get-TransportConfig | Format-List ExternalPostmasterAddress
+
+#This example returns the external postmaster address to the default value
+Set-TransportConfig -ExternalPostmasterAddress $null
+
+#Did it work?
+Get-TransportConfig | Format-List ExternalPostmasterAddress
+
+
+#Let's look at the settings of the organization for SendFromAliasEnabled
+Get-OrganizationConfig | Format-List
+
+Get-OrganizationConfig | Select-Object SendFromAliasEnabled
+
+(Get-OrganizationConfig).SendFromAliasEnabled
+
+#Enable Send from Alias in Microsoft 365 tenant
+Set-OrganizationConfig -SendFromAliasEnabled $True
+
+#Did it work?
+(Get-OrganizationConfig).SendFromAliasEnabled
+
+
+#When the sender adds a distribution group that has more members than the configured large audience size, they are shown the Large Audience MailTip
+#Let's look at the settings of the organization for MailTipsLargeAudienceThreshold
+Get-OrganizationConfig | Format-List mailtips*
+
+(Get-OrganizationConfig).MailTipsLargeAudienceThreshold
+
+#We set the value to 5
+Set-OrganizationConfig -MailTipsLargeAudienceThreshold 25
+
+
+#Change how long permanently deleted items are kept
+#Let's look at Tina's Mailbox
+Get-Mailbox -Identity "tina.fluenza" | Select-Object RetainDeletedItemsFor
+
+#Set Tina's mailbox to keep deleted items for 30 days
+Set-Mailbox -Identity "tina.fluenza" -RetainDeletedItemsFor 30
+
+#Did it work?
+Get-Mailbox -Identity "tina.fluenza" | Select-Object RetainDeletedItemsFor
+
+#Set all user mailboxes in the organization to keep deleted items for 30 days
+Get-Mailbox -ResultSize unlimited -Filter "RecipientTypeDetails -eq 'UserMailbox'" | Set-Mailbox -RetainDeletedItemsFor 30
+
+#Did it work?
+Get-Mailbox -ResultSize unlimited -Filter "RecipientTypeDetails -eq 'UserMailbox'" | Format-List Name,RetainDeletedItemsFor
+
+#But what about the mailboxes that are newly created?
+#Let's take a look at the mailbox plans
+Get-MailboxPlan | Format-Table -AutoSize
+
+#What is the value in these plans?
+Get-MailboxPlan | Select-Object Name, RetainDeletedItemsFor
+
+#Let us now set the value to 30 for all plans
+Get-MailboxPlan | Set-MailboxPlan -RetainDeletedItemsFor 30
+
+#Did it work?
+#Now when a new mailbox is created, the deleted objects are kept for 30 days
+Get-MailboxPlan | Select-Object Name, RetainDeletedItemsFor
+
+
+#Disable plus addressing in Exchange Online
+Set-OrganizationConfig -DisablePlusAddressInRecipients $true
+
+
+#Configure Focused Inbox for everyone in your organization
+#What is the current value? No value is returned, the feature is active
+Get-OrganizationConfig | Format-List Focused*
+
+#We can turn off this feature for the whole organization
+Set-OrganizationConfig -FocusedInboxOn $false
+
+#Did it work?
+Get-OrganizationConfig | Format-List Focused*