한달 테스트 해보고 결재를 해야하는데 제 실력이 부족해 아직 많이 헤매네요.
아래와 같은 메세지 누군가가 저희 서버를 이용해 스팸을 보내는건가요?
참으로 난감하네요. 몇 천통씩 관리자메일로 에러가 들어오네요.

※ 필수입력정보 ※

▷ 제품버젼 :
▷ 오류발생 메뉴/주소 :
▷ 에러메세지 :
제목 : Error sending message [1178922123214.2893323184.26be5.eml] from [저희 도메인]
본문내용 :
[<00>] XMail bounce: Rcpt=[****@****];Error=[550 Requested action not taken: mailbox unavailable]


[<01>] Error sending message [1178922123214.2893323184.26be5.eml] from [저희 도메인].

ID: <L267FF>
Mail From: <****@****>
Rcpt To: <****@****>
Server: <mx4.hotmail.com> [65.54.245.104]


[<02>] The reason of the delivery failure was:

550 Requested action not taken: mailbox unavailable


[<04>] Here is listed the message log file:

[PeekTime] 1178924479 : Sat, 12 May 2007 08:01:19 +0900
<<
ErrCode = -82
ErrString = [RCPT TO:] not permitted by remote SMTP server
ErrInfo = 550 Requested action not taken: mailbox unavailable
SMAIL SMTP-Send MX = "mx4.hotmail.com." SMTP = "koreatextile.net" From = "****@****" To = "****@****" Failed !
SMTP-Error = "550 Requested action not taken: mailbox unavailable"
SMTP-Server = "mx4.hotmail.com."
>>


[<05>] Here is listed the initial part of the message:

Received: from /spool/local
by koreatextile.net with [XMail 1.22 PassKorea061024 LMAIL Server]
for <****@****> from <****@****>;
Sat, 12 May 2007 07:22:03 +0900
To: ****@****
Subject:
From: ****@****
Content-Transfer-Encoding: 7bit
Content-Type: text/plain
Subject: Studies show that over 87% of men see almost immediate positive
effects
Date: Sat, 12 May 2007 07:22:02 +0900

▷ 질문내용 :