邮件服务器 postfix 邮件被视为垃圾邮件
我在正确设置我的 postfix 服务器以免被视为垃圾邮件服务器时遇到一个小问题。
应该有一些开关和简单的配置来做到这一点,但我找不到。有人可以指出如何将我的服务器列入白名单的在线资源吗?
i'm having a small problem with correctly setting my postfix server as to not be regarded as a spam server.
There should be some switches and simple configuration to do that, but i cannot find that. Can anybody point to an online resources that indicated on how to whitelist my server ?
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感谢您推荐我们的 DNS 工具,我们希望回应 Gryphius 所说的有关 MX、PTR 和 SMTP 横幅拥有正确 DNS 记录的内容。如果其中任何一个不正确,都可能导致严重的邮件问题。如果您的 PTR 和 SMTP横幅不匹配或解析为相同的 FQDN 大多数主要 ISP 会将您的邮件标记为垃圾邮件或完全禁止该邮件。
Thanks for recommending our DNS tools, we would like to echo what Gryphius stated about having correct DNS records for MX, PTR and SMTP Banner. If any of these are incorrect it can result in major mail problems. If your PTR and SMTP Banner do not match or resolve to the same FQDN most major ISPs will either mark your message as spam or disallow the message completely.
在大多数情况下,如果没有实际的域名或服务器 IP,则很难判断
,MTA 配置并不是邮件被检测为垃圾邮件的原因(postfix 默认配置可以很好地确保您的服务器不会反向散射,不是垃圾邮件)打开中继等)一个重要的配置值是您的 HELO 字符串,它应该包含您的完全限定公共主机名并匹配该服务器的记录。伪造或不完全合格的 HELO 可能会导致邮件被拒绝。
除此之外,您的问题可能在于您的 DNS 配置(A 记录/rDNS 不匹配、没有 MX 记录、无效的 SPF 记录......),或者您可能有一个“脏”IP 地址(不是静态/标记为消费者拨号ip/黑名单/....)。使用 http://mxtoolbox.com 上的工具来检查这一点。
hard to tell without an actual domain name or server IP
in most cases, the MTA configuration is not the cause of messages being detected as spam (the postfix default configuration does a very good job of making sure your server does not backscatter, is not an open relay etc.) one important configuration value is your HELO string, it should contain your fully qualified public hostname and match the A record of that server. forged or not fully qualified HELO's can cause mail rejects.
apart from that, your problem probably lies in your DNS configuration(A record/rDNS does not match, no MX record, invalid SPF records, ....) or you might have a "dirty" IP address (not static/marked as consumer dial-up ip/blacklisted/....). use the tools at http://mxtoolbox.com to check this.