I can receive emails, bu

The message could not be sent because the server rejected the sender's email address. The sender's email address was *** Email address is removed for privacy ***'.

Subject 'none'
Server Error: 554
Server Response: 554 5.7.1 <*** Email address is removed for privacy ***>: Sender address rejected: Access denied
Server: 'smtp.frontier.com'
Windows Live Mail Error ID: 0x800CCC78
Protocol: SMTP
Port: 465
Secure(SSL): Yes

t I can't send. my email is epix.net but my SMTP is frontier.com.  does this make a difference.