Thanks for your response.
An exemple for our user:
myuser@mydomain.com as a reply-to:
myservice@mydomain.com
This is really appreciate if myuser was not available, because the external email was reply to the service of myuser, and not personally.
But, when we use the mail for internal request, on the @mydomain.com domain, we want for the reply-to:
myuser@mydomain.com
Any idea? Many thanks and best regards.