Return back "Totem is unable to form..." message

This patch returns back SUBJ functionality. It rely on fact, that
sendmsg will return error, and if such error is returned for long time,
it's probably because of firewall.

Signed-off-by: Jan Friesse <jfriesse@redhat.com>
Reviewed-by: Fabio M. Di Nitto <fdinitto@redhat.com>