The original message was received at Sun, 14 Oct 2001 00:00:21 +0900
from nobody@localhost

   ----- The following addresses had transient non-fatal errors -----
goldball@netian.com

   ----- Transcript of session follows -----
... while talking to mx0.netian.com.:
>>> MAIL From: SIZE=349
<<< 451 unable to verify address
goldball@netian.com... Deferred: 451
unable to verify address
Warning: message still undelivered after 4 hours
Will keep trying until message is 5 days old

------------------------------------
에러코드 451이 뭘 뜻하는 건지.....흠...
분명 goldball@netian.com은 계정이
있고..정상인데.

verify가 안돼서..보내는게
 defer됐다는것이..

주소가 있는데도...확인이
 안돼서..발송지연이
 된다니..흠..
뭐가 문제가 있는 건지..내 참...