关于Postfix标头信息中unknown

oldhxyhxy 发布于 2013/04/26 13:29
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这是寄给QQ邮箱的一封MAIL, 红色标示: UNKNOWN

Received: from server03.laingban.com.cn (unknown [211.148.144.243])
    by newmx100.qq.com (NewMx) with SMTP id
    for <79930***@qq.com>; Fri, 26 Apr 2013 11:14:28 +0800
X-QQ-SSF: 0001000000000020017000020000001
X-QQ-mid: mx100t1366946068t34hhrbhc
Received: from techddef146f76 (unknown [222.222.222.229])
    by server03.laingban.com.cn (Postfix) with ESMTP id 77CE3EB8001
    for <79930***@qq.com>; Fri, 26 Apr 2013 10:47:54 +0800 (CST)

邮件服务器211.148.144.243有作反向解析, 为何还有这个提示呢???

[root@server03 ~]# nslookup 211.148.144.243 202.96.128.68
Server:         202.96.128.68
Address:        202.96.128.68#53

Non-authoritative answer:
243.144.148.211.in-addr.arpa    name = server03.laingban.com.cn.

Authoritative answers can be found from:
144.148.211.in-addr.arpa        nameserver = ns2.roadtool.com.
144.148.211.in-addr.arpa        nameserver = ns1.roadtool.com.

第一次接触POSTFIX, 请大侠教教啊
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