[Linux-cluster] DSN: failed (delivery failed)

[Mailbot for etexusa.com]

This is a Delivery Status Notification (DSN).

I was unable to deliver your message to
vallalar2006 at vsnl.com.

I said 
  RCPT TO:<vallalar2006 at vsnl.com>

And they gave me the error;
  550 5.1.1 unknown or illegal alias: vallalar2006 at vsnl.com

 
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