标题: 关于邮件服务器的DNS问题,涉及到退信,请教各位大侠! [打印本页] 作者: yddwan 时间: 2009-5-25 10:59 标题: 关于邮件服务器的DNS问题,涉及到退信,请教各位大侠! 发送到别的公司邮箱里面的信件被退信,已经找到原因,http://unblock.secureserver.net/?ip=211.103.232.** ,被这个网址给列进黑名单了 ,给我的解释是
We cannot find reverse DNS for this IP.
RDNS converts IP addresses (211.103.232.**) to names (such as mail.example.com). Unconfigured networks are at high risk for spam and virus activity. Please contact your ISP to have RDNS assigned to your IP.
If you have additional questions please call 480-624-2500.