【问题标题】:Reverse DNS does not contain the hostname反向 DNS 不包含主机名
【发布时间】:2016-09-23 16:51:49
【问题描述】:

我在 Windows HyperV 中使用 Centos 服务器。通过此服务器向我发送邮件时,我收到了错误邮件。

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

  serefseven@gmail.com
    host gmail-smtp-in.l.google.com [66.102.1.26]
    SMTP error from remote mail server after end of data:
    550-5.7.1 [185.124.86.138] The IP address sending this message does not have a
    550-5.7.1 PTR record setup. As a policy, Gmail does not accept messages from
    550-5.7.1 IPs with missing PTR records. Please visit
    550-5.7.1  https://support.google.com/mail/answer/81126#authentication for more
    550 5.7.1 information. y187si26143569wmc.112 - gsmtp
Reporting-MTA: dns; ln1.postoflscell.com

Action: failed
Final-Recipient: rfc822;serefseven@gmail.com
Status: 5.0.0
Remote-MTA: dns; gmail-smtp-in.l.google.com
Diagnostic-Code: smtp; 550-5.7.1 [185.124.86.138] The IP address sending this message does not have a
 550-5.7.1 PTR record setup. As a policy, Gmail does not accept messages from
 550-5.7.1 IPs with missing PTR records. Please visit
 550-5.7.1  https://support.google.com/mail/answer/81126#authentication for more
 550 5.7.1 information. y187si26143569wmc.112 - gsmtp

mxtollbox.com smtp 测试结果:

SMTP 反向 DNS 不匹配 反向 DNS 不包含主机名

SMTP 横幅检查反向 DNS 与 SMTP 横幅不匹配

SMTP TLS 警告 - 不支持 TLS。

SMTP 事务时间 15.485 秒 - 不好!交易时间

SMTP 有效主机名正常 - 反向 DNS 是有效主机名

SMTP 连接时间 0 秒 - 良好的连接时间

SMTP 开放中继正常 - 不是开放中继。

如何解决这个问题?

【问题讨论】:

  • 你能解决这个问题吗?

标签: email dns smtp whm exim


【解决方案1】:

由于错误状态为The IP address sending this message does not have a PTR record setup,因此您需要为185.124.86.138 设置PTR 记录(接收邮件服务器通常需要this)。反向 DNS 由“拥有”IP 地址的人控制,因此您应该联系Bilgehosting 为您设置记录)

【讨论】:

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