问：需要看一下SMTP认证是否有问题!
对方反馈的：My Service Provider says you must check on your side that SMTP Authentication is ENABLED,发给客户的邮件被退回问题
答：您好，检查应是：发信权限：IMAP服务未开启，您可在“邮箱-设置-基本设置-IMAP访问”中启用后，再测试一下。非常感谢您长期对我司的支持!
问：还是不行！
答：您好， 请告知下具体的邮箱账户和发送到的账户我司协助核实下 ，
非常感谢您长期对我司的支持,谢谢！
问：carel@metforcesa.co.za
carel@metforce.co.za
问：这是发送到的账户
问：benlyalloy.com 邮箱就这个 具体的邮箱账户是什么
答：您好， 发送邮箱账户是否为 ，请再发送试下，若仍然报错，请提供下设置截图和报错截图我司协助核实 ，
非常感谢您长期对我司的支持,谢谢！
问：
问：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_=_–
问：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，检查日志您是使用的postmaster账号发送的，默认postmaster是超管账号不对外发送邮件，建议您使用其它邮箱发送试试,我司找了其它邮箱测试可以正常发送，非常感谢您长期对我司的支持！
问：
问：
问：emily@benlyalloy.com 这个账号也发不出去 这应该不是超管账号吧
答：您好，从您截图看， ，这是对方邮局的设置问题，请web方式发送测试是否正常，可以尝试让对方将您邮局设置加白名单中再观察是否收发正常，谢谢
咱们邮局现在运行是没问题的，个别邮箱收发设置不同邮局供应商和邮局系统，因此任何邮局都不能保证百分百全部邮局邮件都收发不出现异常，因此需要根据退信进一步核实具体原因并优化
