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20th Feb 2024
什么会引起 SPF PermError?

当一个域名上的 SPF 记录不能被正确地解释的话,SPF 返回 PermError (永久性错误)。与 SPF TempError (临时性错误),SPF PermError 需要管理员介入来修复该问题。

下面是引起 SPF PermError 的原因:

域名上发现多条 SPF 记录; SPF 记录语法不正确; 单次 SPF 检查调用的 DNS 查询超过 10 次; 单次 SPF 检查调用的 DNS 查询超过 2 次为无效; 在 redirect 中发生异常。

在本文中,我们将逐一了解这些情况。

域名上发现多条 SPF 记录

一个域名或者子域名上面只能够发布…

SPF SPF PermError
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20th Feb 2024
SPF PermError: Too Many DNS Lookups - 当 SPF 记录超过 10 次 DNS 查询极限

"SPF PermError: too many DNS lookups" 是一个在很多 SPF (Sender Policy Framework,发送者策略框架) 实现中常见的错误。当超过这个 10 次 DNS 查询的极限以后,SPF PermError,即 SPF 永久性错误,将被返回。SPF PermError 会降低邮件送达率。

本文介绍什么是 SPF 的 DNS 查找极限,当 SPF 记录越过这个极限的后果,以及如何使用 DMARCLY 的 Safe SPF 功能来解决这个问题。

SPF PermError: too many DNS lookups

当您在域名上…

SPF SPF PermError Too Many DNS Lookups
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20th Feb 2024
Partial Safe SPF for Non-flattenable SPF Includes

While Safe SPF overcomes the 10-DNS-lookup limit in SPF, sometimes it's desirable to flatten only a part of your SPF record, while leaving the rest as is. If this is the case, you can use partial Safe SPF.

One good reason for this is that some email delivery services like HelpScout, Office 365, At…

SPF SPF PermError Too Many DNS Lookups
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20th Feb 2024
如何修复 SPF PermError: too many DNS lookups

当排查邮件送达问题时,您可能会在接收邮件服务器上看到类似下面的 SPF 错误:

SPF PermError: too many DNS lookups

SPF Permanent Error: too many DNS lookups

SPF Fail: too many DNS lookups

这些信息表明您域名上的 SPF 记录包含多于 10 次 DNS 查询,这使得该 SPF 记录违反了 SPF 规范的 SPF 10 次查询极限。

当该错误发生时,SPF 返回一个 PermError(永久性错误),该错误会使 SPF 验证无法通过。如果最终的邮件验证结果失败,…

SPF SPF PermError DNS lookup limit

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