Exchange-Online-DKIM-rotation-for-all-domains

1.1.1

Exchange-Online-DKIM-rotation-for-all-domains.ps1

                                
<#PSScriptInfo

.VERSION 1.1.1

.GUID 97510708-a258-4c4e-b2e4-4acdb0ad840b

.AUTHOR dkim@wolkenman.nl

.COMPANYNAME

.COPYRIGHT

.TAGS

.LICENSEURI

.PROJECTURI https://github.com/IntuneAdmin/Exchange-Online-DKIM-rotation-for-all-domains

.ICONURI

.EXTERNALMODULEDEPENDENCIES 

.REQUIREDSCRIPTS

.EXTERNALSCRIPTDEPENDENCIES

.RELEASENOTES 

Adds -KeySize 2048 to the command.

Existing 1024-bit keys will be upgraded to 2048-bit.

Keys already at 2048 will get a new 2048-bit key

.PRIVATEDATA

#>

<# 

.DESCRIPTION 

 ExchangeOnline DKIM Rotation for All Domains with DKIM True 

#>

$organization = "<DOMAINNAME>.onmicrosoft.com"

Connect-ExchangeOnline -ManagedIdentity -Organization $organization

$customdomains = (Get-DkimSigningConfig | ? { $_.Domain -NotLike '*.onmicrosoft.com' -and $_.Enabled -like 'True' }).name 

$customdomains | foreach { 

    $Rotate = Rotate-DkimSigningConfig -Identity $_ -KeySize 2048

}