Office 365

How to add multiple domains to a white-list on Skype for Business Online (Office 365)

Download and install Skype for Business Online, Powershell Module:

https://www.microsoft.com/en-us/download/details.aspx?id=39366

Run each command one at a time.

Import-Module SkypeOnlineConnector

$userCredential = Get-Credential

$sfbSession = New-CsOnlineSession -Credential $userCredential

Import-PSSession $sfbSession

$a = New-CsEdgeDomainPattern -Domain "domainname.com"

$b = New-CsEdgeDomainPattern -Domain "domainname.com"

$c = New-CsEdgeDomainPattern -Domain "domainname.com"

$newAllowList = New-CsEdgeAllowList -AllowedDomain $a,$b,$c

Set-CsTenantFederationConfiguration -AllowedDomains $newAllowList

Remove-PSSession $sfbSession