[support] Hosting services shuts off mail from user nobody

[Nicolas Tostin]

> > I am managing several Drupal sites, and the hosting service has shut  
> > off email from 'nobody' as a security risk.
> > 
> > This breaks registration, password resets, notify, contact, and any  
> > other feature that sends email.

Can't you use an mail-from in setting.php like this :
ini_set("sendmail_from","webmaster at domain.com");