大部分QQ邮箱发的邮件被MDaemon服务拒绝

heiye213

同事用QQ邮箱发的邮件都被MDaemon服务器拒绝了，只有一个同事用QQ邮箱发的邮件没拒绝。我用163发到MDaemon服务器又可以接收到，请各位大侠帮忙找出原因，不胜感激。
Performing DKIM lookup
Thu 2010-05-13 13:53:28: *  File: d:\progra~1\mdaemon\queues\temp\md50000001295.tmp
Thu 2010-05-13 13:53:28: *  Message-ID: tencent_7D965308792EF7B97652B57B@qq.com
Thu 2010-05-13 13:53:28: * Signature (1): ;v=1;a=rsa-sha256;c=relaxed/relaxed;d=qq.com;s=s0907;t=1273729947;b h=<not logged>;
Thu 2010-05-13 13:53:28: *    Verification result: [0] good
Thu 2010-05-13 13:53:28: *  Result: pass
Thu 2010-05-13 13:53:28: ---- End DKIM results
Thu 2010-05-13 13:53:28: Performing VBR certification (Domain: qq.com, Auth: DKIM)
Thu 2010-05-13 13:53:28: *  File: d:\progra~1\mdaemon\queues\temp\md50000001295.tmp
Thu 2010-05-13 13:53:28: *  Message-ID: tencent_7D965308792EF7B97652B57B@qq.com
Thu 2010-05-13 13:53:28: *  Certifier (trusted): vbr.emailcertification.org ...
Thu 2010-05-13 13:53:28: *    Querying: qq.com._vouch.vbr.emailcertification.org ...
Thu 2010-05-13 13:53:38: *  DNS: 10 second wait for DNS response exceeded
Thu 2010-05-13 13:53:38: *    Certifier does not recognize that domain
Thu 2010-05-13 13:53:38: *  Certification result: message not certified