After working OK, now unable to send email using Windows Live Mail on Windows 7

Error message :-
The message could not be sent because the server rejected the sender's email address.
Server error 555
Windows Live Mail Error ID:0x800ccc78
Protocol SMTP
Port 25
Secure(SSL): No
1 answer Last reply
More about working unable send email windows live mail windows
  1. you have been blacklisted for sending spam. (even if you haven't sent spam personally) it happens sometimes. Has your account been hacked recently by chance?
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