title.gettext restricted to local domain users

# if subscriber request come from local domain do_it else reject
is_subscriber([listname],[sender]) smtp,dkim,smime,md5    -> do_it
match([sender],/[conf->host]$/)          smtp,dkim,smime,md5    -> do_it
#
# this is example of a rule to check local adresses
# verify_netmask('1.12.123.0/24') smtp,dkim,md5,smime -> do_it
#
true()                         smtp,dkim,md5,smime -> reject(reason='subscribe_local_user')	

