Hi,
I am trying to send to a EX2013 Distribution list from the outside world. The list contains both internal users and external contacts. If I send it from internally the list gets send out correctly, if i try and send it out from the outside world only internal users receive the emails but there is no errors or NDRs to tell me why.
I have allowed '<label for="ResultPanePlaceHolder_EditMailGroup_deliveryManagementSection_contentContainer_rblRequireSenderAuthentication_1" id="ResultPanePlaceHolder_EditMailGroup_deliveryManagementSection_contentContainer_rblRequireSenderAuthentication_1_label">Senders inside and outside of my organization' in the Delivery Management tab.</label>
I do use GFI which shows the emails but just says OK so it doesn't seem like its that which is the issue.
Can anyone help please. I did do a Powershell but cannot remember what it was.