The AFS & LDAP pts server loader service
ptloader interacts with the authorization service, either AFS or
LDAP, providing group membership information to Cyrus. When
auth_mech: pts is set in imapd.conf(5), ptsloader
will then consult the backend specified in the
ptloader reads its configuration options out of the imapd.conf(5) file and does not accept the -C option.