什么是RBL/ORDBL IP address啊，邮件发不出去，请教各位

islabber

当我发送邮件到下列某一地址，系统反馈这一消息，不解，。。。。。<br>
---------------------------------------------------------------------------------------------<br>
Your message did not reach some or all of the intended recipients.<br>
<br>Subject: Just Email acount test<br>Sent: 2005-10-13 15:06<br>
<br>
The following recipient(s) could not be reached:<br>
<br>steelliu@mightytek.com.cn on 2005-10-13 15:06<br>You do not have permission to send to this recipient. For assistance, contact your system administrator.<br><hpccn.hpc.com.cn #5.7.1 smtp;554 5.7.1 This message has been blocked because it is from a <font color="red">RBL/ORDBL IP address</font>.(last hop black ip 221.224.24.166)><br>

islabber

我发给其他客户没有问题，而被拒绝用户接受其他人的邮件没问题，我真晕。

lizhso

是反病毒/垃圾邮件组织的黑名单, 如果在名单中,国外有些地址发不过去. 除了不发病毒和垃圾邮件外还要有DNS反解.

yinjie

尽量做25端口的一一映射。而不是NAT