Verizon is sending out notices that you should change your outgoing email port to port 587,  do not do that set your port to 66 as noted last year, port 587 does not function on most units world wide.

Advanced has had port 66 open as a reserve for all clients for over 5 years, you can follow all the instructions Verizon sent you, ONLY us port 66 instead.

Regards,
System Administrator.