What is the proper way to use Plesk for webhosting only and not for e-mail? We already have a separate mailserver setup for that. I disabled the "Enable mail management functions in Panel" box, and set the number of e-mail boxes to 0 for all packages. Also the MX-records for the domain are set to the proper external mailserver. But when PHP web applications send e-mail qmail still thinks the domain is local: Regenerating the configuration files with "/usr/local/psa/admin/sbin/mchk --with-spam" does not help either. The domains are still listed in the /var/qmail/control/rcpthosts and virtualdomains configuration files.