메일이 왜 큐에서 안나갈까요?

안녕하세요

메일이 왜 큐에서 안나가구 있을까요?그래서 지금 미치겠습니다

글구 deferred 는 무슨말이죠?

 고수님들의 빠른 답변 부탁드리겠습니다..

  꾸벅~~~~

[root@dnapass mail]# mailq -v
                /var/spool/mqueue (79 requests)
-----Q-ID----- --Size-- -Priority- ---Q-Time--- --------Sender/Recipient--------
h4S1DKhq031804    13858     120317 May 28 10:13 <Paul_Lyen_Danny@hotmail.com>
      8BITMIME   (host map: lookup (jagnai.com): deferred)
                                                <jagnai@jagnai.com>
h4S1Dfhq031806    68029     120796 May 28 10:14 <reokim@darim.com>
                 (host map: lookup (jspat.co.kr): deferred)
                                                <khj@jspat.co.kr>
h4S15lOY031703     3919     123785 May 28 10:06 MAILER-DAEMON
                 (Deferred: Connection refused by email.mk.co.kr.)
                                                <email@email.mk.co.kr>
                 (Deferred: Connection refused by email.mk.co.kr.)
h4S0Ishq030658    16267     210542 May 28 09:19 <isorinews@isori.net>
                 (host map: lookup (jagnai.com): deferred)
                                                <jagnai@jagnai.com>
h4S0vbhq031544     3063     210773 May 28 09:57 <renew0@hanmail.net>
                 (host map: lookup (pkkim.com): deferred)
                                                <mail@pkkim.com>
h4S036hU030338       14     300002 May 28 09:03 <idolpiawewe@cyberoney.co.kr>
                 (host map: lookup (pkkim.com): deferred)
                                                <mail@pkkim.com>
h4RNriZs030141        8     390002 May 28 08:54 <mail@pkkim.com>?
                 (host map: lookup (pkkim.com): deferred)
                                                <mail@pkkim.com>
h4RNqYZs030115     3008     390804 May 28 08:52 <idolpia@hanmail.net>
                 (host map: lookup (pkkim.com): deferred)
                                                <khj@pkkim.com>
h4RNqYZs030116     3012     390806 May 28 08:52 <idolpia@hanmail.net>
                 (host map: lookup (jspat.co.kr): deferred)
                                                <pkk@jspat.co.kr>
h4RNqgZs030117     3013     390807 May 28 08:53 <idolpia@hanmail.net>
                 (host map: lookup (jspat.co.kr): deferred)
                                                <mail@jspat.co.kr>
h4RNmWb9029961     3010     480786 May 28 08:48 <idolpia@hanmail.net>
                 (host map: lookup (pkkim.com): deferred)
                                                <mail@pkkim.com>
h4RNmfb90