Sending to Distribution Groups from External Addresses

Question

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.

Answer 1

Hi ,
On my side i will not prefer ecp for message tracking. Instead i will prefer EMS.
Below command will be used on the exchange management shell to have a grid-view on the output.
Get-TransportService | Get-MessageTrackingLog -Sender "external user" -ResultSize unlimited -MessageSubject "test" | Select-Object eventid,sender,timestamp,@{Name="Recipients";Expression={$_.recipients}},@{Name="RecipientStatus";Expression={$_.recipientstatus}},messagesubject
| Out-GridView
(or)
Below command will be used on the exchange management shell to have the output on the csv file.
Get-TransportService | Get-MessageTrackingLog -Sender "External user" -ResultSize unlimited -MessageSubject "test" | Select-Object eventid,sender,timestamp,@{Name="Recipients";Expression={$_.recipients}},@{Name="RecipientStatus";Expression={$_.recipientstatus}},messagesubject
| Export-csv c:\nithya.csv
Reference
Link for message tracking : http://exchangeserverpro.com/exchange-2010-message-tracking-log-search-powershell/
Thanks & Regards S.Nithyanandham