请教各位 这是什么原因？！

support_best

Thu 2012-05-24 10:37:44: *      Evaluating ip4:119.147.8.0/21: no match
Thu 2012-05-24 10:37:44: *      Evaluating ip4:222.202.96.0/24: no match
Thu 2012-05-24 10:37:44: *      Evaluating ip4:58.251.149.0/24: no match
Thu 2012-05-24 10:37:44: *      Evaluating ip4:119.147.6.0/24: no match
Thu 2012-05-24 10:37:44: *      Evaluating ip4:183.60.2.0/24: no match
Thu 2012-05-24 10:37:44: *      Evaluating ip4:113.108.77.0/24: no match
Thu 2012-05-24 10:37:44: *      Evaluating ip4:183.62.126.0/23: no match
Thu 2012-05-24 10:37:44: *      Evaluating ip4:183.60.52.0/24: no match
Thu 2012-05-24 10:37:44: *      Evaluating ip4:183.62.104.0/24: no match
Thu 2012-05-24 10:37:44: *      Evaluating ip4:112.90.136.0/21: no match
Thu 2012-05-24 10:37:44: *      Evaluating ip4:183.60.60.0/23: match
Thu 2012-05-24 10:37:44: *    Evaluating include:spf-a.mail.qq.com: match
Thu 2012-05-24 10:37:44: *  Evaluating include:spf.mail.qq.com: match
Thu 2012-05-24 10:37:44: *  Result: pass
Thu 2012-05-24 10:37:44: ---- End SPF results
Thu 2012-05-24 10:37:44: --> 250 <weixinteam@qq.com>, Sender ok
Thu 2012-05-24 10:37:44: <-- RCPT TO: <abc@abc.com.cn>
Thu 2012-05-24 10:37:44: 执行 DNS-BL 查询（183.60.61.200 - 正在连接 IP）
Thu 2012-05-24 10:37:44: *  sbl-xbl.spamhaus.org，来自 $IP$ 的邮件被拒绝，参见 spamhaus.org - 失败
Thu 2012-05-24 10:37:44: *  relays.ordb.org，来自 $IP$ 的邮件被拒绝，参见 ordb.org/faq/ - 失败
Thu 2012-05-24 10:37:44: *  bl.spamcop.net，来自 $IP$ 的邮件被拒绝，参见 spamcop.net - 失败
Thu 2012-05-24 10:37:45: *  sbl-xbl.spamhaus.org - 失败
Thu 2012-05-24 10:37:45: ---- 结束 DNS-BL 结果
Thu 2012-05-24 10:37:45: --> 250 abc@abc.com.cn, Recipient ok
Thu 2012-05-24 10:37:45: <-- DATA
Thu 2012-05-24 10:37:45: Creating temp file (SMTP): d:\mdaemon\queues\temp\md50000127052.tmp
Thu 2012-05-24 10:37:45: --> 354 Enter mail, end with <CRLF>.<CRLF>
Thu 2012-05-24 10:37:45: Message size: 6496 bytes
Thu 2012-05-24 10:37:45: --> 554 Message does not conform to standards
Thu 2012-05-24 10:37:45: <-- QUIT
Thu 2012-05-24 10:37:45: --> 221 See ya in cyberspace
Thu 2012-05-24 10:37:45: SMTP 会话终止（in/out 字节： 6599/318）