Unable to send mail in windows live mail


New Email
I can't send my email but can receive
This is the error I get:
Server: ctel etc
Windows Live Mail Error 0x800CCC7A
Protocol: SMTP
Port: 587
Secure(SSL): yes

I contacted account administer. He took over my PC and was unable to resolve this issue. Had no information on that Live Mail Error. I've researched several place on line with no success. Hope someone can help resolve this issue