Hi, I have recently changed to debian which implied a change from sendmail to exim. Now I'm not able to send mail to a couple of mailing lists any more. With the help of the list admin I think I found the culprit: envelope sender = <local_user_name@mail.my_provider> This is wrong of course. How do I convince exim to set the envelope sender to <epprecht@mail.my_provider> ? Robert Epprecht.