“On June 27, 2014, Microsoft notified customers that we were suspending Microsoft Security Notifications due to changing governmental policies concerning the issuance of automated electronic messaging. We have reviewed our processes and will resume these security notifications with our monthly Advanced Notification Service (ANS) on July 3, 2014.”
Read the full article here – http://krebsonsecurity.com/2014/06/microsoft-kills-security-emails-blames-canada/