Google DNS 設定

2023 4月 BlueHost 公司 email 被Google Gmail退件

退件內容

This is the mail system at host soproxy2.mail.unifiedlayer.com.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                   The mail system

<********@gmail.com>: host gmail-smtp-in.l.google.com[142.250.141.27] said:
    550-5.7.26 This mail is unauthenticated, which poses a security risk to the
    550-5.7.26 sender and Gmail users, and has been blocked. The sender must
    550-5.7.26 authenticate with at least one of SPF or DKIM. For this message,
    550-5.7.26 DKIM checks did not pass and SPF check for [fufeng.com] did not
    pass 550-5.7.26 with ip: [74.220.205.74]. The sender should visit
    550-5.7.26  https://support.google.com/mail/answer/81126#authentication for
    550 5.7.26 instructions on setting up authentication.
    o11-20020a170902d4cb00b001a64a341be1si14909694plg.214 - gsmtp (in reply to
    end of DATA command)
Reporting-MTA: dns; soproxy2.mail.unifiedlayer.com
X-Postfix-Queue-ID: D07718032CDE
X-Postfix-Sender: rfc822; khuang@fufeng.com
Arrival-Date: Tue, 18 Apr 2023 00:13:34 -0600 (MDT)

Final-Recipient: rfc822; ******@gmail.com
Original-Recipient: rfc822;******@gmail.com
Action: failed
Status: 5.7.26
Remote-MTA: dns; gmail-smtp-in.l.google.com
Diagnostic-Code: smtp; 550-5.7.26 This mail is unauthenticated, which poses a
    security risk to the 550-5.7.26 sender and Gmail users, and has been
    blocked. The sender must 550-5.7.26 authenticate with at least one of SPF
    or DKIM. For this message, 550-5.7.26 DKIM checks did not pass and SPF
    check for [fufeng.com] did not pass 550-5.7.26 with ip: [74.220.205.74].
    The sender should visit 550-5.7.26
    https://support.google.com/mail/answer/81126#authentication for 550 5.7.26
    instructions on setting up authentication.
    o11-20020a170902d4cb00b001a64a341be1si14909694plg.214 - gsmtp

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