메일 발송이 안됩니다.

얼마전에도 비슷한 질문을 한적이 있었는데요..

요번에는 아예 메일이 발송이 안되네요 ㅠㅠ;

웹사이트를 구축하 같은서버에 센드메일을 설치를 했습니다.

웹사이트 게시판에서 메일보내기를 하면 어떤 메일은 가고

또 어떤메일은 안가고 그러네요..

로그는 아래와 같습니다.

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Mar 17 22:54:41 apm7 sendmail[8256]: k2HDsakg008256: from=apache, size=2664, class=0, nrcpts=1, msgid=<200603171354.k2HDsakg008256@localhost.localdomain>, relay=apache@localhost
Mar 17 22:54:41 apm7 sendmail[8256]: k2HDsakg008256: to=xxx_dev@widerthan.com, ctladdr=apache (48/48), delay=00:00:05, xdelay=00:00:00, mailer=relay, pri=32664, relay=[127.0.0.1] [127.0.0.1], dsn=4.0.0, stat=Deferred: Permission denied
Mar 17 23:15:21 apm7 sendmail[8273]: k2HEFGiA008273: from=<apache@localhost.localdomain>, size=2873, class=0, nrcpts=1, msgid=<200603171354.k2HDsakg008256@localhost.localdomain>, proto=ESMTP, daemon=MTA, relay=localhost [127.0.0.1]
Mar 17 23:15:21 apm7 sm-msp-queue[8272]: k2HDsakg008256: to=xxx_dev@widerthan.com, ctladdr=apache (48/48), delay=00:20:45, xdelay=00:00:00, mailer=relay, pri=122664, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (k2HEFGiA008273 Message accepted for delivery)
Mar 17 23:16:21 apm7 sendmail[8277]: k2HEFGiA008273: to=<xxx_dev@widerthan.com>, ctladdr=<apache@localhost.localdomain> (48/48), delay=00:01:00, xdelay=00:01:00, mailer=esmtp, pri=122873, relay=mail1.widerthan.com. [221.146.202.25], dsn=5.1.3, stat=User unknown
Mar 17 23:16:21 apm7 sendmail[8277]: k2HEFGiA008273: k2HEGLi8008277: DSN: User unknown
Mar 17 23:16:22 apm7 sendmail[8277]: k2HEGLi8008277: to=<apache@localhost.localdomain>, delay=00:00:01, xdelay=00:00:00, mailer=local, pri=34116, dsn=2.0.0, stat=Sent
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고수님들 좀 도와주세요 ㅠㅠ'