The original message was received at Wed, 18 Dec 2002 14:36:48 +0900
from [xx.xxx.xxx.xxx]
    ----- The following addresses had permanent fatal errors -----
<xxx.xxx.COM>
    (reason: 554 Mail from yyy at yyy.co.kr rejected for policy reasons.)
    ----- Transcript of session follows -----
... while talking to mx.xxx.com.:
>>> MAIL From:<yyy at yyy.co.kr> SIZE=4047
<<< 554 Mail from yyy at yyy.co.kr rejected for policy reasons.
554 5.0.0 <xxx at xxx.COM>... Service unavailable
 아직까지 잘 가던 메일이 리턴이 됩니다.
리턴메세지는 위와 같습니다.
 답변 부탁드립니다...ㅠㅠ