Windows Live Mail Error ID: 0x8CCCD052

I am able to receive emails but unable to send any emails, with or without pictures. I have Win 7 and windows live mail 2012. I get the following pop up :

Delete the photo email, create a new one, and try to send it again.

Server: 'smtp.east.cox.net'
Windows Live Mail Error ID: 0x8CCCD052
Protocol: SMTP
Port: 25
Secure(SSL): No

Thanks, 

Leemay11