07:05 11:12 SMTPD(6184016700000282) [192.168.1.1] HELO yousong
07:05 11:12 SMTPD(6184016700000282) [192.168.1.1] MAIL FROM: <yousong_sun@phicosz.cn>
07:05 11:12 SMTPD(6184016700000282) [192.168.1.1] RCPT TO: <peterhsu@dynamicpcb.cn>
07:05 11:12 SMTPD(6184016700000282) [192.168.1.1] e:\IMail\spool\D6184016700000282.SMD 1053
07:05 11:12 SMTPD(6184016700000282) performing antispam checks
07:05 11:12 SMTP-(6184016700000282) processing e:\IMail\spool\Q6184016700000282.SMD
07:05 11:12 SMTP-(6184016700000282) ldeliver phicosz.cn server-main (1) yousong_sun@phicosz.cn 1053
07:05 11:12 SMTP-(6184016700000282) Trying dynamicpcb.cn (0)
07:05 11:12 SMTP-(6184016700000282) Connect dynamicpcb.cn [222.92.127.236:25] (1)
07:05 11:12 SMTP-(6184016700000282) 220 DingksMail.dynamicpcb.cn DYNAMICPCB MAIL SERVER Thu, 5 Jul 2007 11:13:08 +0800
07:05 11:12 SMTP-(6184016700000282) >EHLO phicosz.cn
07:05 11:12 SMTP-(6184016700000282) 250-DingksMail.dynamicpcb.cn Hello [58.211.204.94]
07:05 11:12 SMTP-(6184016700000282) 250-TURN
07:05 11:12 SMTP-(6184016700000282) 250-SIZE 25600000
07:05 11:12 SMTP-(6184016700000282) 250-ETRN
07:05 11:12 SMTP-(6184016700000282) 250-PIPELINING
07:05 11:12 SMTP-(6184016700000282) 250-DSN
07:05 11:12 SMTP-(6184016700000282) 250-ENHANCEDSTATUSCODES
07:05 11:12 SMTP-(6184016700000282) 250-8bitmime
07:05 11:12 SMTP-(6184016700000282) 250-BINARYMIME
07:05 11:12 SMTP-(6184016700000282) 250-CHUNKING
07:05 11:12 SMTP-(6184016700000282) 250-VRFY
07:05 11:12 SMTP-(6184016700000282) 250-X-EXPS GSSAPI NTLM LOGIN
07:05 11:12 SMTP-(6184016700000282) 250-X-EXPS=LOGIN
07:05 11:12 SMTP-(6184016700000282) 250-AUTH GSSAPI NTLM LOGIN
07:05 11:12 SMTP-(6184016700000282) 250-AUTH=LOGIN
07:05 11:12 SMTP-(6184016700000282) 250-X-LINK2STATE
07:05 11:12 SMTP-(6184016700000282) 250-XEXCH50
07:05 11:12 SMTP-(6184016700000282) 250 OK
07:05 11:12 SMTP-(6184016700000282) >MAIL FROM:<yousong_sun@phicosz.cn>
07:05 11:12 SMTP-(6184016700000282) 250 2.1.0 yousong_sun@phicosz.cn....Sender OK
07:05 11:12 SMTP-(6184016700000282) >RCPT To:<peterhsu@dynamicpcb.cn>
07:05 11:12 SMTP-(6184016700000282) 250 2.1.5 peterhsu@dynamicpcb.cn
07:05 11:12 SMTP-(6184016700000282) >DATA
07:05 11:12 SMTP-(6184016700000282) 354 Start mail input; end with <CRLF>.<CRLF>
07:05 11:12 SMTP-(6184016700000282) >.
07:05 11:12 SMTP-(6184016700000282) 550 5.7.1 Requested action not taken: message refused
07:05 11:12 SMTP-(6184016700000282) ERR undeliverable 550 5.7.1 Requested action not taken: message refused
07:05 11:12 SMTP-(6184016700000282) SMTP_DELIV_FAILED
07:05 11:12 SMTP-(6184016700000282) >QUIT

07:05 11:12 SMTP-(6184016700000282) 550 5.7.1 Requested action not taken: message refused
07:05 11:12 SMTP-(6184016700000282) ERR undeliverable 550 5.7.1 Requested action not taken: message refused
07:05 11:12 SMTP-(6184016700000282) SMTP_DELIV_FAILED

信件被拒绝了，可能是内容也可能是被ANTI-SPAM了，可能的话联系下那里的IT解决。