This is an automatically generated Delivery Status Notification. THIS IS A WARNING MESSAGE ONLY. YOU DO NOT NEED TO RESEND YOUR MESSAGE. Delivery to the following recipients has been delayed. The reason for the problem: 4.1.2 - Bad destination host 'DNS Soft Error looking up ipst.min-saude.pt (MX) while asking recursive_nameserver0.parent. Error was: unable to reach nameserver on any valid IP'