The original message was received at Mon, 28 Apr 2008 00:39:42 +0900 (JST)
from localhost [127.0.0.1]
----- The following addresses had permanent fatal errors -----
<sakai-shibu(a)ms.dgn.ne.jp>
(reason: 550 5.1.1 <sakai-shibu@ms.dgn.ne.jp>... User unknown)
----- Transcript of session follows -----
... while talking to [172.16.90.51]:
>> RCPT To:<sakai-shibu@ms.dgn.ne.jp>
<<<
550 5.1.1 <sakai-shibu@ms.dgn.ne.jp>... User unknown
550 5.1.1 <sakai-shibu@ms.dgn.ne.jp>... User unknown