問：需要看一下SMTP認證是否有問題!
對方反饋的：My Service Provider says you must check on your side that SMTP Authentication is ENABLED,發給客戶的郵件被退回問題
答：您好，檢查應是：發信權限：IMAP服務未開啟，您可在“郵箱-設置-基本設置-IMAP訪問”中啟用后，再測試一下。非常感謝您長期對我司的支持!
問：還是不行！
答：您好， 請告知下具體的郵箱賬戶和發送到的賬戶我司協助核實下 ，
非常感謝您長期對我司的支持,謝謝！
問：carel@metforcesa.co.za
carel@metforce.co.za
問：這是發送到的賬戶
問：benlyalloy.com 郵箱就這個 具體的郵箱賬戶是什么
答：您好， 發送郵箱賬戶是否為 ，請再發送試下，若仍然報錯，請提供下設置截圖和報錯截圖我司協助核實 ，
非常感謝您長期對我司的支持,謝謝！
問：
問：Return-Path: <postmaster@benlyalloy.com>Received: from smtpxb117.myhost.net (smtpxb117.myhost.net [127.0.0.1]) by smtp-hk-66.yunyou.top (smtp-hk-66.yunyou.top) with ESMTP id 4HG0R22yrxz10Ll for <carel@metforcesa.co.za>; Fri, 24 Sep 2021 13:07:57 0800 (CST)Received: from bjsmtp168.vhostgo.com (bjsmtp168.vhostgo.com [127.0.0.1]) by myhost.net (west263) with ESMTP id 4HG0HW584pz57Rxp for <carel@metforcesa.co.za>; Fri, 24 Sep 2021 13:01:27 0800 (CST)Received: from smtp-my-01.yunyou.top (smtp-my-01.yunyou.top [127.0.0.1]) by bjsmtp60.vhostgo.com (west263) with ESMTP id 4HG08t5wyYzyXy for <carel@metforcesa.co.za>; Fri, 24 Sep 2021 12:55:42 0800 (CST)Received: from unknown (unknown [127.0.0.1]) by smtp-my-01.yunyou.top (WestCloudMail) with LOCALMTA id DBCA566B86 for <carel@metforcesa.co.za>; Fri, 24 Sep 2021 12:55:41 0800 (CST)Message-ID: <78800f70b007d1dc5fbff31b7ac8f4fa@localhost>Date: Fri, 24 Sep 2021 12:55:41 0800Subject: =?utf-8?Q?=E6=82=A8=E5=A5=BD=E9=82=AE=E7=AE=B1?= =?utf-8?Q?=E6=B5=8B=E8=AF=95?=From: =?utf-8?Q?=E9=82=AE=E7=AE=B1=E7=AE=A1=E7=90=86=E5=91=98?= <postmaster@benlyalloy.com>To: "" <carel@metforcesa.co.za>MIME-Version: 1.0Content-Type: multipart/alternative; boundary="_=_yunmail_v2__ed65a753dbfb705c63254bc45d938fb8_=_"X-Originating-IP: 127.0.0.1X-Mailer: West Cloud WebMail, mail.yunyou.top
–_=_yunmail_v2__ed65a753dbfb705c63254bc45d938fb8_=_Content-Type: text/plain; charset=utf-er-Encoding: base64
5oKo5aW96YKu566x5rWL6K V
–_=_yunmail_v2__ed65a753dbfb705c63254bc45d938fb8_=_Content-Type: text/html; charset=utf-er-Encoding: base64
PHA PHNwYW4gc3R5bGU9ImZvbnQtZmFtaWx5OiBzb25ndGk7IGNvbG9yOiAjMDAwMDAwOyBmb250LXNpemU6IDE2cHg7Ij7mgqjlpb3pgq7nrrHmtYvor5U8L3NwYW4 PGJyLz48L3A
–_=_yunmail_v2__ed65a753dbfb705c63254bc45d938fb8_=_–
問：Reporting-MTA: dns; smtp-hk-66.yunyou.topX-smtp-hk-66-yunyou-top-Queue-ID: 4HG0R22yrxz10LlX-smtp-hk-66-yunyou-top-Sender: rfc822; postmaster@benlyalloy.comArrival-Date: Fri, 24 Sep 2021 13:07:57 0800 (CST)
Final-Recipient: rfc822; carel@metforcesa.co.zaent: rfc822;carel@metforcesa.co.zaAction: failedStatus: 4.0.0Remote-MTA: dns; spefb.spambox.co.zaDiagnostic-Code: smtp; 451 relay not permitted!
答：您好，檢查日志您是使用的postmaster賬號發送的，默認postmaster是超管賬號不對外發送郵件，建議您使用其它郵箱發送試試,我司找了其它郵箱測試可以正常發送，非常感謝您長期對我司的支持！
問：
問：
問：emily@benlyalloy.com 這個賬號也發不出去 這應該不是超管賬號吧
答：您好，從您截圖看， ，這是對方郵局的設置問題，請web方式發送測試是否正常，可以嘗試讓對方將您郵局設置加白名單中再觀察是否收發正常，謝謝
咱們郵局現在運行是沒問題的，個別郵箱收發設置不同郵局供應商和郵局系統，因此任何郵局都不能保證百分百全部郵局郵件都收發不出現異常，因此需要根據退信進一步核實具體原因并優化