Trying to right click on a picture and "Send to" mail recipient. Windows mail opens and goes through the motions until I hit the send button. It closes and I get this pop-up: An unknown error has occurred.

Server: 'promail.ptd.net'
Windows Live Mail Error ID: 0x8007007A
Protocol: SMTP
Port: 587
Secure(SSL): No

 Tried uninstalling and reinstalling, setting the defaults, signing out and back in, resetting password...everything. Still won't work. None of the listed suggestions has worked either. Maybe a new angle from someone?