发送电子邮件时被检查的内容是什么（列入黑名单的IP） [英] what is what it gets checked when sending an e-mail (blacklisted IP's)

问题描述

您好，



我收到了一位客户的通知，他们说他们的邮件服务器不允许我们的电子邮件继续我们在黑名单上进入他们的系统。



我看到我们的公共IP地址在一些黑名单上（4个左右）我已经开始从那里删除我们的IP的过程，但是...



哪个是正在检查的IP地址？



1.域名提供商公共IP？



或



2.我们的公共知识产权？



我的意思是，想象一下，我发送一封来自酒店的电子邮件，因为不同的客人，他们遇到了一些问题有一个列入黑名单的公共IP地址...

在这种情况下，如果使用选项2，那么可能我们的域名会因其他人而被阻止。



它的工作方式是什么？你知道有哪些文件可以解释这个吗？



提前谢谢你。 ：thumbsup：

Hello,

I''ve got a notification from one of our customers which say that their mail server won''t allow our e-mails to proceed into their system as we are on a blacklist.

I''ve seen that our public IP address is on some blacklists (4 or so) and I''ve started the procedure of removing our IP from there, but...

Which is the IP address that is being checked?

1. The domain provider public IP?

or

2. our public IP?

I mean, imagine that I''m sending one e-mail from a hotel in which they have got several problems due to different guests and that they have a blacklisted public IP address...
In that case, if option 2 would be used then probably our domain would become blocked due to other people.

Which is the way it works? do you know of any document out there that would explain this?

Thank you in advance. :thumbsup:

推荐答案

检查的内容是尝试发送电子邮件的SMTP服务器的IP地址。否认方认为您的SMTP服务器IP地址取决于您使用的网络配置。它在DMZ中吗？ SMTP服务器是否可以从Internet直接访问IP地址？等等。



所以你制作的场景真的没有多大意义。如果您从酒店网络（具有黑名单IP）发送电子邮件，这只会影响您使用酒店网络的SMTP服务器或在您的笔记本电脑上运行SMTP服务器，这也是不可想象的酒店网络的配置（路由）将指定端口25的包转发到您的机器。



问候，

- Manfred

What gets checked is the IP adress of the SMTP server that is trying to deliver emails. What the denying side perceives as your SMTP servers IP adress depends on what network configuration you are using. Is it in a DMZ? Does the SMTP server have an IP adress directly reachable from the internet? etc. etc.

So the scenario you drew up really doesn''t make much sense. If you are sending email from a hotel network (that has a blacklisted IP) this would only have an impact if you were using an SMTP server of the hotels network or had a SMTP server running on your laptop which is also unthinkable as that would afford configuration of the hotels network (routing) to forward packages designated to port 25 towards your machine.

Regards,

— Manfred

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