dkim=neutral（不良服務類型）

我正在嘗試為電子郵件設置 dkim，但我在 gmail 上收到此錯誤消息：dkim=neutral (bad service type)。但是在 Hotmail 上它正在傳遞。我沒有找到有關此錯誤消息的任何資訊，因此任何建議都會有所幫助。

這是原始消息：

Delivered-To: TESTING@gmail.com
Received: by 2002:a2e:5854:0:0:0:0:0 with SMTP id x20-v6csp893645ljd;
       Wed, 8 Aug 2018 08:07:45 -0700 (PDT)
X-Google-Smtp-Source: AA+uWPwCsAoSTliFFu3I4cBtvNV8CvibawSIWTWiElYkASdt3RQ47cI0CIJaV6vr0GWys6s/3Jt6
X-Received: by 2002:a24:8b82:: with SMTP id g124-v6mr2798782ite.70.1533740864216;
       Wed, 08 Aug 2018 08:07:44 -0700 (PDT)
ARC-Seal: i=1; a=rsa-sha256; t=1533740864; cv=none;
       d=google.com; s=arc-20160816;
       b=1BsJJ1Sj/HbLQ3PNoOa/t0OHMwjAXAkj4cij3n9ffX1tlY1GLPM6r9f42wEyB32ITM
        f8yELMvZU32AGgjVW7YHIa4RZbzYLLko6rNQAn3bidcXpXJaxyOFv1ash4TBQPCDqK42
        yiUgmPnkWmiwl0vzQ1EwvJh8XgyKiVN6z4JZwmfiKgfGXhO2owB1zyFma9pqDAs6x8Rr
        AxXGBlS7qS7MEeZVi5MOhUK/vHVZsgiT28HPta6B8t424XbY0nK52SeBCBbsVcJ3uQPq
        3kSpT82xnlQnh/xahyvOvhzgW+6keyQVxflTM2AQSfAGmMh5zAWi7UzTkg99C8o3Wy0S
        oP0A==
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816;
       h=to:from:subject:date:content-transfer-encoding:content-disposition
        :mime-version:message-id:dkim-signature:arc-authentication-results;
       bh=kyJ1zj8ga4Rrouj1cYjnkFyoRvpab2ORo/JsFPpGPeg=;
       b=wA6sRXpfHwSBPs8+7ozPKKs06+ncqHEAI8WZABiet5HjZFTAKVKbvHXNcJHmQZrYya
        fi94H9xuxscn5VvKxA/krnmeFxHtWI+CZVzDlAh5oAr26wJDJF4VYBtf7s9E+J4fNJ+C
        bIsnmApRPH+JCA6FrRF4yOy6MVBDohs2F+N07xx9weKju0zobunG3x7MWcUQN3OUMWp4
        uDsRZsiU2nn0kpujtXCRGls7atOUrRkR7Eyl9705035Lg9jJrAOP9Gvci7/sxP9pTTaF
        8JtKaQre0BCfEbP4iguHco3ruRBgWh9Jn9a9cH1jy4MkZTbb/a8WEz7CoV0JP3cLMar9
        9xOw==
ARC-Authentication-Results: i=1; mx.google.com;
      dkim=neutral (bad service type) header.i=@libertycreativesolutions.com
MIME-Version: 1.0
Content-Disposition: inline
Content-Transfer-Encoding: 8bit
Content-Type: text/html
X-Mailer: MIME::Lite 3.027 (F2.77; T1.28; A2.04; B3.14; Q3.13)
Date: Wed, 8 Aug 2018 10:07:42 -0500
Subject: testing 
From: TESTING@libertycreativesolutions.com
To: TESTING@gmail.com

您s=libertycreativesolutions;的 DNS 條目libertycreativesolutions._domainkey.libertycreativesolutions.com如下所示。

text = "v=DKIM1; g=*; d=libertycreativesolutions.com; s=libertycreativesolutions; k=rsa-sha256; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQD1ixExNc94dMULg3MTGwPkCOxMh1fW5qV793HlNFeIgD83UYO//aPUcY+j2+KkpOvBJixT05X0W+OJrNm35fKesjFuLOUrZPDPEXTXxYLz3B0++0CVrF4aX2JvXkpbn" "WSQo76HkxWJfYORn3aNewu9m/C7T020np4bMZF7Cdvk4wIDAQAB"

s=在DKIM-Signature標頭中代表選擇器，libertycreativesolutions但s=在 DNS 條目中代表不同的服務類型。因此s=libertycreativesolutions;，從您的 DNS 條目中刪除。g=並且d=在那裡也不需要。

引用自：https://serverfault.com/questions/925477