로그에 보낸이도 표시되지 않는

Apr 14 16:00:33 webserver sendmail[3681]: k3A6G6KB005195: to=<nosamo@nosam.org>, delay=4+00:44:27, xdelay=00:01:01, mailer=esmtp, pri=9512586, relay=nosam.org. [66.214.17.184], dsn=4.0.0, stat=Deferred: Connection timed out with nosam.org.
Apr 14 16:00:33 webserver sendmail[3681]: k3A625KB005097: to=<admin@mail.eti.co.kr>, delay=4+00:58:28, xdelay=00:00:00, mailer=esmtp, pri=9632084, relay=mail.eti.co.kr., dsn=4.0.0, stat=Deferred: Connection timed out with mail.eti.co.kr.
Apr 14 16:00:33 webserver sendmail[3681]: k3A2s9iT003766: to=<admin@mail.eti.co.kr>, delay=4+04:06:24, xdelay=00:00:00, mailer=esmtp, pri=9882733, relay=mail.eti.co.kr., dsn=4.0.0, stat=Deferred: Connection timed out with mail.eti.co.kr.
Apr 14 16:00:33 webserver sendmail[3681]: k3A1n8tX014114: to=<reply@ntb.or.kr>, delay=4+05:11:25, xdelay=00:00:00, mailer=esmtp, pri=10236330, relay=mail.ntb.or.kr., dsn=4.0.0, stat=Deferred: 452 4.4.5 Insufficient disk space; try again later
Apr 14 16:00:33 webserver sendmail[3681]: k3A1FJtX013916: to=<reply@ntb.or.kr>, delay=4+05:45:14, xdelay=00:00:00, mailer=esmtp, pri=10256047, relay=mail.ntb.or.kr., dsn=4.0.0, stat=Deferred: 452 4.4.5 Insufficient disk space; try again later
Apr 14 16:00:33 webserver sendmail[3681]: k39NrLtX013503: to=<lettee9@home.lettee.com>, delay=4+07:07:12, xdelay=00:00:00, mailer=esmtp, pri=10415798, relay=home.lettee.com. [211.47.72.123], dsn=4.0.0, stat=Deferred: Connection refused by home.lettee.com.
Apr 14 16:00:33 webserver sendmail[3681]: k39MbUtX013326: to=<admin@mail.eti.co.kr>, delay=4+08:23:03, xdelay=00:00:00, mailer=esmtp, pri=10426117, relay=mail.eti.co.kr., dsn=4.0.0, stat=Deferred: Connection timed out with mail.eti.co.kr.
Apr 14 16:00:33 webserver sendmail[3681]: k39FtutX012756: to=<admin@mail.eti.co.kr>, delay=4+15:04:37, xdelay=00:00:00, mailer=esmtp, pri=10995323, relay=mail.eti.co.kr., dsn=4.0.0, stat=Deferred: Connection timed out with mail.eti.co.kr.
Apr 14 16:00:33 webserver sendmail[3681]: k39BMNtX012593: to=<lettee9@home.lettee.com>, delay=4+19:38:10, xdelay=00:00:00, mailer=esmtp, pri=11406382, relay=home.lettee.com., dsn=4.0.0, stat=Deferred: Connection refused by home.lettee.com.

from 도 없고....

ctladdr도 없는 저런 메일 보내기로 주정되는 건들이 주기적으로 발생합니다.

여기서 보내는 사람은 없는듯한데 acess 에도 저 계정들을 등록해서 막아놓았구요

저것때문에 자꾸  DBL에 걸리는듯하여....경유 아이피도 설정해서 작업했습니다.

그런데도 주기적으로 저렇게 뜨는건 어떻게 막아야 할까요~~

고수님들의 조언 부탁 드립니다. (__)