A few days ago my father (Windows Live Mail using Verizon.Net) stopped receiving SOME emails.  There are no commonalities within the email addresses not being received and they are from various different domains.  None of the not received emails addressees are showing on the Blocked Sender list; all are on the Safe Sender List.  He is able to send emails to all addressees with no problem, including the addressees he is not receiving email from.  Other family members using Verizon.net ARE receiving email from the addressees my father is not receiving.