答：您好，我們在https://www.mimecast.com/senderfeedback 提交了申訴，并且調整了發到 samtec.com 的路由，您稍后再重新發送試下,非常感謝您長期對我司的支持.由此給您帶來的不便之處,敬請原諒!謝謝!
問：測試了再發OK了，請問是什么原因造成的？
答：您好，可能是有一個發信IP被對方給拒絕引起的。
問：有退信。發送了國外收不到 下面的郵箱
退信內容：sales@zjfdzd.com 發件人： Postmaster發送時間： 20:31收件人： sales主題： 系統退信Charset 退信信息
(Bounced Information) 收件地址 (Recipient) kika@adina.com.br 退信返回碼 (Bounce Code) host mx.adina.com.br[127.0.0.1] said: 550 istrative prohibition (in reply to end of DATA command) 退信說明
(Bounce Reason) 解決方案
(Bounce solution) 退信信息
(Bounced Information) 收件地址 (Recipient) alan@adina.com.br 退信返回碼 (Bounce Code) host mx.adina.com.br[127.0.0.1] said: 550 istrative prohibition (in reply to end of DATA command) 退信說明
(Bounce Reason) 解決方案
(Bounce solution) 退信信息
(Bounced Information) 收件地址 (Recipient) tatiane@adina.com.br 退信返回碼 (Bounce Code) host mx.adina.com.br[127.0.0.1] said: 550 istrative prohibition (in reply to end of DATA command) 退信說明
(Bounce Reason) 解決方案
(Bounce solution) 退信信息
(Bounced Information) 收件地址 (Recipient) shana.cohen@adina.com.br 退信返回碼 (Bounce Code) host mx.adina.com.br[127.0.0.1] said: 550 istrative prohibition (in reply to end of DATA command) 退信說明
(Bounce Reason) 解決方案
(Bounce solution)
系統退信(Bounced email)很抱歉，您發送的郵件被退回，以下是退信相關信息： (Sorry,the email you sent is returned.The below is the information about the bounce.)原郵件信息
(Original Message)發件地址 (Sender)sales@zjfdzd.com主題 (Theme)Re: RES: DELIVERY 20-039/2 – DEC, 09時間 (Time 13:00:22退信信息
(Bounced Information)收件地址 (Recipient)operacional.imp@adina.com.br退信返回碼 (Bounce Code)host mx.adina.com.br[127.0.0.1] said: 550 istrative prohibition (in reply to end of DATA command)退信說明
(Bounce Reason)解決方案
(Bounce solution)退信信息
(Bounced Information)收件地址 (Recipient)monyke_almeida@adina.com.br退信返回碼 (Bounce Code)host mx.adina.com.br[127.0.0.1] said: 550 istrative prohibition (in reply to end of DATA command)退信說明
(Bounce Reason)解決方案
(Bounce solution)
答：您好，您再發送試下。
問：退信是什么問題
答：您好，
| 錯誤代碼 | 550 istrative prohibition. |
| 形成原因 | 退信表示郵件被策略禁止。 |
我們調整了下，您可以再發送試下。