Question : every email sent to address produces a "message was undeliverable result"

Every email sent to a certain email address produces a "message was undeliverable result". jheining is a valid charter email address and has been working until the lat few days.

Now when I (or anybody else) sends an email to certain email address , we get the following result:

This Message was undeliverable due to the following reason:

Each of the following recipients was rejected by a remote mail server.
The reasons given by the server are included to help you determine why
each recipient was rejected.

    Recipient:
    Reason:    VS10-RT Possible forgery or deactivated due to abuse (#5.1.1) [email protected]


Please reply to [email protected]
if you feel this message to be in error.



Reporting-MTA: dns; mta51.charter.net
Arrival-Date: Sun, 13 Jul 2008 23:27:21 -0400
Received-From-MTA: dns; aacpub02.charter.net (10.20.200.49)

Original-Recipient: RFC822;zz>
Final-Recipient: RFC822;
Action: failed
Status: 5.1.3
Remote-MTA: dns; f.mx.mail.yahoo.com (209.191.88.247)
Diagnostic-Code: smtp; 553 VS10-RT Possible forgery or deactivated due to abuse (#5.1.1) [email protected]
X-Actual-Recipient: RFC822;

Answer : every email sent to address produces a "message was undeliverable result"

This looks liek the email address is forwarding, to a Yahoo account, that has been deactivated.