Error Message : 441 4.4.1 temporay dns failed

-- You SendMail --

>> Received: from test.co.kr (xxx.xxx.xxx.xxx)
>> by test.co.kr (xxx.xxx.xxx.xxx) with [Nmail V3.5 20040105(S)]
>> for from ;
>> Sat, 25 Sep 2004 12:30:44 +0900
>> From: =?ks_c_5601-1987?b?x9S/tb/B?=
>> Subject: =?ks_c_5601-1987?b?vsiz58fPvLy/5A==?=
>> To: ****@****
>> MIME-Version: 1.0
>> X-Mailer: Nmail-3.5 by passkorea.net
>> Date: Sat, 25 Sep 2004 12:30:44 +0900
>> Content-Type: text/html; charset=euc-kr
>> Content-Transfer-Encoding: base64
>>
>> PEhUTUw+DQo8SEVBRD4NCjxNRVRBIE5BTUU9IkdFTkVSQVRPUiIgQ29udGVudD0i
>> TWljcm9zb2Z0IERIVE1MIEVkaXRpbmcgQ29udHJvbCI+DQo8VElUTEU+PC9USVRM
>> RT4NCjwvSEVBRD4NCjxCT0RZPg0KPERJVj48Rk9OVCBmYWNlPbG8uLIgc2l6ZT0y
>> Pr7Is+fHz7y8v+Q8L0ZPTlQ+PC9ESVY+DQo8L0JPRFk+DQo8L0hUTUw+DQo8aW1n
>> IHNyYz0iaHR0cDovL3dvbm11c2ljLmNvLmtyL3dlYm1haWwvTWFpbENvbmZpcm0v
>> Q29uZmlybS5hc3A/Y29uZmlybUNvZGU9d29ubXVzaWMxNzA2MjAwNDkyNTEyMzA0
>> NCIgd2lkdGg9IjAiIGhlaWdodD0iMCI+PCEtLSAtLT4NCjxicj4NCjxodG1sPg0K
>> PGJvZHk+DQo8YnI+DQo9PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09
>> PT09PT09PT09PT09PQ0KPGJyPg0KLSBFYXN5ICEgRmFzdCAhIFBvd2VyZnVsIE5t
>> YWlsIHNlcmllcyENCjxicj4NCi0gRG93bmxvYWQgc2l0ZSA8YSBocmVmPSJodHRw
>> Oi8vcGFzc2tvcmVhLm5ldAoiIHRhcmdldD0iX25lcmJsYW5rIj5odHRwOi8vcGFz
>> c2tvcmVhLm5ldDwvYT48YnI+DQo8Ym9keT4NCjxodG1sPg0K