returned mail see transcript details original message received wed 16 mar 2005 07 57 30 gmt ip 190 234 sarva net 202 154 190 234 following addresses permanent fatal errors bis iptek net id reason 550 bis iptek net id unknown user account transcript session follows talking mx 3 iptek net id rcpt bis iptek net id 550 bis iptek net id unknown user account 550 5 1 1 bis iptek net id user unknown