Distribution Group: Sender don't recieve email that he send to a group

Distribution Group: Sender don't recieve email that he send to a group

Hi
I configure a distribution group.
In the group i have 1 moderator and 2 user
When someone of the group send an email to the group everyone recieve the email exept the sender.
How can i configure the system for that the sender recieve also the email that he send to the group

Thanks for your help

Axel