SMTP 로그인이 안됩니다.. "급"!!!

Fedora Core3 설치하고 Sendmail / Qpopper 등 설치 완료했습니다.

AUTH 기능을 사용해서 로그인 되게 세팅하였습니다.

그런데 아웃룩에서 SMTP 로그인 할 때 계속 인증창만 뜨고 로그인이 안됩니다.. 물론 SMTP 로그인 인증 옵션 체크 했고요, 메일 로그를 보니 아래와 같습니다..

Jun 24 15:26:50 XXX sendmail[30660]: j5O6Qotc030660: [221.150.50.XXX] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA
Jun 24 15:26:51 XXXsendmail[30661]: j5O6QpEE030661: [221.150.50.XXX] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA
Jun 24 15:27:04 XXXsendmail[30662]: j5O6R42Q030662: [221.150.50.XXX] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA
Jun 24 15:27:06 XXX sendmail[30663]: j5O6R6bI030663: [221.150.50.XXX] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA
Jun 24 15:27:07 XXX sendmail[30664]: j5O6R7eu030664: [221.150.50.XXX] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA
Jun 24 15:27:07 XXX sendmail[30665]: j5O6R75D030665: [221.150.50.XXX] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA
Jun 24 15:27:08 XXX sendmail[30666]: j5O6R8ir030666: [221.150.50.XXX] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA
Jun 24 15:27:08 XXX sendmail[30667]: j5O6R8kk030667: [221.150.50.XXX] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA
Jun 24 15:27:09 XXX sendmail[30668]: j5O6R8nL030668: [221.150.50.XXX] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA
Jun 24 15:27:09 XXX popper[30669]: (v4.0.8) Unable to get canonical name of client 221.150.50.XXX: Unknown host (1)
Jun 24 15:27:09 XXX popper[30669]: (v4.0.8) Servicing request from "221.150.50.XXX" at 221.150.50.XXX
Jun 24 15:27:09 XXX popper[30669]: Unable to open bulletin directory '/var/spool/bulls': No such file or directory (2)
Jun 24 15:27:09 XXX popper[30669]: Stats: korean44 0 0 0 0 221.150.50.XXX 221.150.50.XXX
Jun 24 15:27:10 XXX sendmail[30670]: j5O6R95F030670: [221.150.50.XXX] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA
Jun 24 15:27:11 XXX sendmail[30671]: j5O6RBEo030671: [221.150.50.XXX] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA
Jun 24 15:28:05 XXX sendmail[30673]: j5O6S4KO030673: [221.150.50.XXX] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA
Jun 24 15:28:09 XXX sendmail[30674]: j5O6S9dK030674: [221.150.50.XXX] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA
Jun 24 15:28:10 XXX sendmail[30675]: j5O6SAKq030675: [221.150.50.XXX] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA

Sendmail 은 did not issue .. 라고 로그인 시도할때마다 계속 에러가 나구요...
Qpopper 도 제대로 도는 줄 알았더니만, Unable to get ... 뭐 이렇게 나오는군요..

각 설정은,

[root@aidii /var/log]# cat /usr/lib/sasl/Sendmail.conf
pwcheck_method:shadow
[root@aidii /var/log]#

[root@aidii /var/log]# telnet localhost 25
Trying 127.0.0.1...
Connected to localhost.localdomain (127.0.0.1).
Escape character is '^]'.
220 aidii.com ESMTP Sendmail 8.13.1/8.13.1; Fri, 24 Jun 2005 15:34:42 +0900
ehlo localhost
250-XXXXX Hello XXXXXX [127.0.0.1], pleased to meet you
250-ENHANCEDSTATUSCODES
250-PIPELINING
250-8BITMIME
250-SIZE
250-DSN
250-ETRN
250-AUTH LOGIN PLAIN
250-DELIVERBY
250 HELP

위에 AUTH 부분은 CRAM-MD5 랑 DIGEST-MD5 설정 해주었을 때도 똑같이 에러났었습니다..

부디 가르침 부탁드립니다...