这里说得很清楚呀：

DNS query timeout for dkim._domainkey.test.com

查询 DNS 超时了

DNS 查询超时，当然是检查你的网络状态了

我给autorespond@dk.elandsys.com发了封邮件，返回如下
DomainKeys Signature validation: not available DomainKeys Policy: "" "v=spf1" "a" "mx" "a:mail.test.com" "mx:mail.test.com" "~all\"\"" Note: The authentication results are not available as there was no signature header or the signature could not be verified Information about DomainKeys is available at http://www.elandsys.com/resources/sendm … nkeys.html Information about DKIM is available at http://www.elandsys.com/resources/sendmail/dkim.html Information about ADSP is available at http://www.elandsys.com/resources/sendmail/dkim.html Original message: Received: from mail.test.com ([117.8.190.151]) by ns1.qubic.net (8.14.4.Alpha0/8.14.4.Alpha0) with ESMTP id n5G3RdVe019566 for <autorespond+dk@dk.elandsys.com>; Mon, 15 Jun 2009 20:27:48 -0700 (PDT) Authentication-Results: ns1.qubic.net; sender-id=pass header.from=aaa@test.com; spf=pass smtp.mfrom=aaa@test.com X-Spam-score: 5.300000 X-Spam-hits: BAYES_50,RDNS_NONE,SCAM_RID,TVD_SPACE_RATIO Authentication-Results: ns1.qubic.net; dkim=permerror (verification error: missing parameter(s) in policy data) header.i=@test.com; x-dkim-adsp=temperror Received: from localhost (mail.test.com [127.0.0.1]) by mail.test.com (iRedMail) with ESMTP id E4EB89882E7 for <autorespond+dk@dk.elandsys.com>; Tue, 16 Jun 2009 03:36:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=test.com; h=content-transfer-encoding:content-type:user-agent:message-id :subject:to:from:date:mime-version:x-virus-scanned; s=dkim; t= 1245123380; x=1245987380; bh=g3zLYH4xKxcPrHOD18z9YfpQcnk/GaJedfu stWU5uGs=; b=S4tFWHEZhLUjSlrkPqPGjYgpSFKUgYZ3cv8ioIicoI4VawqMhZx jUsv1zhuEmg7H/xHlM3xRw0W+Q2pHFNUeXURAzvx4cabsGdq8Kg8WUPIvq4NJNdR lvWmJCV3ovCb6sFT6IJKim9LTXDdfE7ddbG882yFo61RCMBeUgUgaWCY= X-Virus-Scanned: amavisd-new at mail.test.com Received: from mail.test.com ([127.0.0.1]) by localhost (mail.test.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id bCv2DIbio-W8 for <autorespond+dk@dk.elandsys.com>; Tue, 16 Jun 2009 11:36:20 +0800 (CST) Received: from mail.test.com (mail.test.com [127.0.0.1]) by mail.test.com (iRedMail) with ESMTP id C05D7988287 for <autorespond+dk@dk.elandsys.com>; Tue, 16 Jun 2009 03:36:15 +0000 (UTC) MIME-Version: 1.0 Date: Tue, 16 Jun 2009 11:36:15 +0800 From: <aaa@test.com> To: autorespond+dk@dk.elandsys.com Subject:[***SPAM***] test Message-ID: <fbf5c444ac421132ad93f261079524de@127.0.0.1> X-Sender: aaa@test.com User-Agent: RoundCube WebMail Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit test

看来只有自己解决了！