bonjour à tous
quelqu’un pourrait-il me dire comment corriger ce message d’erreur svp.

* warning: mail() [function.mail]: SMTP server response: 501 <you@yourdomain>... Sender domain must exist in C:\wamp\www\campus\includes\mail.inc on line 193.
* Unable to send e-mail. Please contact the site administrator if the problem persists.
* warning: mail() [function.mail]: SMTP server response: 501 <you@yourdomain>... Sender domain must exist in C:\wamp\www\campus\includes\mail.inc on line 193.
* Unable to send e-mail. Please contact the site administrator if the problem persists.