I have a virtual server installed with a Joomla! Website. I send email from this site using the PHPmail function. However, my client has another mail server. When I set up the server, I enabled the mail feature for this domain because I wanted to have a log of the mail sent from the site. But how to I have to configure the DNS then ? Also, the mail I receive from the site have a return path of "admin_username_of_the_domain@hostname", hostname being a valid domain name I own, but having nothing to do with the client. How can I have a return path of "info@domain_name_of_the_client" ?