메일수신이 안됩니다.

1)텔넷으로 할때 아래와 같은 출력이 나옵니다. 반대로 하면 womanhouse.or.kr에서 보내는 것은 잘 됩니다.
[root@ns spool]# telnet localhost 25
Trying 127.0.0.1...
Connected to ns.womanhouse.or.kr (127.0.0.1).
Escape character is '^]'.
220 ns.womanhouse.or.kr ESMTP Sendmail 8.11.6/8.11.6; Mon, 13 May 2002 06:07:04
+0900

mail from : bonacom@bonacom.or.kr
250 2.1.0 bonacom@bonacom.or.kr... Sender ok

rcpt to : y@womanhouse.or.kr
250 2.1.5 y@womanhouse.or.kr... Recipient ok (will queue)



2)아웃룩에서 메일을 보내고 난 다음 리시버된 메세지입니다.
   **********************************************
   **      THIS IS A WARNING MESSAGE ONLY      **
   **  YOU DO NOT NEED TO RESEND YOUR MESSAGE  **
   **********************************************

The original message was received at Mon, 13 May 2002 00:44:16 +0900
from ns.womanhouse.or.kr [127.0.0.1]

  ----- The following addresses had transient non-fatal errors -----
y@womanhouse.or.kr

  ----- Transcript of session follows -----
Warning: message still undelivered after 4 hours
Will keep trying until message is 5 days old