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未能發送電郵到Gmail - Knowledgebase / Technical / Email - Scicube Helpdesk


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  1. 如果發送電郵到 Gmail 收到以下退信

The IP address sending this message does not have a

5.7.25 PTR record setup, or the corresponding forward DNS entry does not

5.7.25 point to the sending IP. As a policy, Gmail does not accept messages

5.7.25 from IPs with missing PTR records. Please visit

5.7.25 for more

代表閣下VDS或獨立主機未有設定好PTR紀錄,請電郵至 聯絡我們安排處理

  1. 如果發送電郵到 Gmail 收到以下退信

Our system has detected an unusual rate of

421-4.7.28 unsolicited mail originating from your IP address. To protect our

421-4.7.28 users from spam, mail sent from your IP address has been temporarily

421-4.7.28 rate limited. Please visit

421-4.7.28 to

421 4.7.28 review our Bulk Email Senders Guidelines.

主要可能性是未有設定好SPF紀錄,一般情況下我們已經預設設定好,但部分客戶域名未有使用我提供的DNS/Name Server便需要查看一下自己的DNS有沒有設定適當的SPF紀錄


"v=spf1 a mx ~all"

如果使用其它公司DNS (如wix),請確保TXT 紀錄有加入以上SPF紀錄。如果本身有其它公司的SPF紀錄請先刪除,如果已經加入但仍然收到退信請電郵至 聯絡我們安排處理,謝謝。

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