PowerShell Example restricting Office 365 mail sending application to use only one sender address

HowTo-MailSendLimitAccessOneMailbox.ps1

<#
    HOW TO permissie voor mail  versturen beperken tot één mailbox
#>

Install-Module -Name ExchangeOnlineManagement
Import-Module ExchangeOnlineManagement
Connect-ExchangeOnline -UserPrincipalName <YOUR_USERNAME>
New-DistributionGroup -Name "MyEmailService" -Alias myemailservice -Type security
New-ApplicationAccessPolicy -AppId <YOUR_CLIENT_Id> `
    -PolicyScopeGroupId <YOUR_GROUPs_PRIMARY_EMAIL> -AccessRight RestrictAccess `
    -Description "Restrict app permissions to only allow access to service account"
Add-DistributionGroupMember -Identity MyEmailService `
    -Member <YOUR_SENDER_ADDRESS> -Confirm:$false

<# application access policies opvragen #>
Get-ApplicationAccessPolicy
<# application access policy verwijderen #>
Remove-ApplicationAccessPolicy -Identity <identiteit>


<#
    Praktijkvoorbeeld
#>

New-DistributionGroup -Name "Aura Mailer App sender restriction" `
    -Alias Aura-Mailer-App-sender-restriction `
    -Type security
New-ApplicationAccessPolicy -AppId aabbccdd-eeff-0011-2233-445566778899 `
    -PolicyScopeGroupId Aura-Mailer-App-sender-restriction `
    -AccessRight RestrictAccess `
    -Description "Restrict app permissions to only allow access to service account"
Add-DistributionGroupMember -Identity Aura-Mailer-App-sender-restriction `
    -Member aura@domein.nl -Confirm:$false