메일로그에서 정보 빼내는법

안녕하세요..

아래 내용은 maillog 에서 일부를 짤라온것입니다.

그런데 내용중 to=<메일주소> 해서 받은 사람주소는 있는거 같은데

보낸 사람의주소가 로그에 안남네요.

아마   iB37hR718624 처럼 이상한 숫자 문자 조합된 녀석이 아닌가 싶은데요.

로그파일의 메일 주소에서 보낸 메일 주소는 어떻게 알수 있나요?

Dec  3 16:43:27 epayschool sendmail[18625]: iB37hR718624: to=<suhan@epayschool.co.kr>, delay=00:00:00, xdelay=00:00:00, mailer=local, pri=30920, dsn=2.0.0, stat=Sent

Dec  3 17:06:19 epayschool sendmail[19057]: iB386I719057: lost input channel from [222.101.7.211] to MTA after rcpt
Dec  3 17:06:19 epayschool sendmail[19057]: iB386I719057: from=<utzzap903@yahoo.com>, size=0, class=0, nrcpts=0, proto=SMTP, daemon=MTA, relay=[222.101.7.211]

Dec  3 17:28:19 epayschool sendmail[19521]: iB38SJ719521: from=<ENGLIS200312071024590328@yahoo.com>, size=1398, class=0, nrcpts=1, msgid=<TXSGKNLOUUWRXKUEXVVHUK@yahoo.com>, bodytype=8BITMIME, proto=SMTP, daemon=MTA, relay=[222.101.15.64]

Dec  3 17:28:19 epayschool sendmail[19522]: iB38SJ719521: to=<suhan@epayschool.co.kr>, delay=00:00:00, xdelay=00:00:00, mailer=local, pri=30912, dsn=2.0.0, stat=Sent

Dec  3 17:28:28 epayschool sendmail[19528]: iB22CiZ16851: to=youligoosl@sayclub.com, delay=1+06:15:44, xdelay=00:00:00, mailer=esmtp, pri=2850733, relay=smtp.sayclub.com. [211.174.56.156], dsn=4.2.0, stat=Deferred: 450 Client host rejected: cannot find your hostname, [203.251.224.46]

Dec  3 17:33:05 epayschool sendmail[19611]: iB38X5719611: from=<song10@paran.com >, size=989, class=0, nrcpts=1, msgid=<PTDERJFUGRSJYBCOCGDUWEW@yahoo.com>, bodytype=8BITMIME, proto=SMTP, daemon=MTA, relay=[218.238.235.237]

Dec  3 17:33:05 epayschool sendmail[19612]: iB38X5719611: to=<suhan@epayschool.co.kr>, delay=00:00:00, xdelay=00:00:00, mailer=local, pri=30514, dsn=2.0.0, stat=Sent