When Office 365 tried to send your message, the receiving email server outside Office 365 reported an error.

Question

您好 ：

请问这种情况是怎么回事。

Your message to........ couldn't be delivered.
When Office 365 tried to send your message, the receiving email server outside Office 365 reported an error.
	sales3	Office 365	halimov	<br>	:---	:---:	---:	<br>	Sender		Action Required	<br>							<br>	---	---	---	---	---		<br>			Policy violation or system error
	How to Fix It	<br>	---	<br>	Check the "Reported Error" from the "Error Details" section shown below for more information about the problem. The error might tell you what went wrong and how to fix it. For example, if the error states that the message was blocked due to a potential<br> virus or because the message was too large, try sending the message again without attachments.	<br>	If you're not able to fix the problem, it's likely that only the recipient's email admin can fix it. Contact the recipient by some other means (by phone, for example) and ask them to tell their email admin about the problem. Give them the "Reported Error"<br> from the "Error Details" section below.
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More Info for Email Admins
Status code: 550 5.0.350  <br><br> <br><br>The error reported by the receiving server wasn't specific enough to determine the exact nature of the problem. These errors often indicate the message violates a security or policy setting configured on the recipient's email servers. <br><br> <br><br>If the sender is unable to fix the problem by modifying their message, then it's likely a problem that only the recipient's email admin can fix. Try the following: <br><br> <br><br>Check the error for information about the problem - The "Reported Error" returned by the external email server can be found in the "Error Details" section below. This error might tell you what went wrong and provide clues for how<br> to fix it. For example, if the error states the message was rejected due a Sender Policy Framework (SPF) issue, then you'll have to work with your domain registrar to correctly configure your domain's SPF records. <br><br> <br><br>Check the error for information about where the problem is happening - For example, look for a domain name like contoso.com. A domain name in the error might suggest who is responsible for the error. It could be the recipient's<br> email server, or it could be a third-party service that your organization or the recipient's organization is using to process or filter email messages. <br><br> <br><br>If you can't fix the problem, contact the responsible party's email admin - Give them the error code and error message from this non-delivery report (NDR) to help them troubleshoot the issue. For security or policy violation issues,<br> it might be sufficient for them to just add your sending IP addresses or domain to their allowed senders list. <br><br> <br><br>It's likely that only the recipient's email admin can fix the problem. Unfortunately, it's unlikely Office 365 Support will be able to help with these kinds of externally reported errors.
Original Message Details
	Created Date:	5/21/2020 5:35:59 AM	<br>	---	---	<br>	Sender Address:	******@xxx.xx	<br>	Recipient Address:	******@xxx.xx	<br>	Subject:	Re: From SATA
Error Details
	Reported error:	550 5.0.350 Remote server returned an error -> 550 104.xx.124.50 is not allowed to send mail from xxx.com	<br>	---	---	<br>	Retry count:	1	<br>	DSN generated by:	xxxx.prod.outlook.com	<br>	Remote server:	mail.xxx.xxx.au

Message Hops
HOP	TIME (UTC)	FROM	TO	WITH	RELAY TIME
1	5/21/2020 <br><br>5:40:43 AM	SKY-20190907ZTS	m9783.xxx.xxx.163.com	ESMTPA	4 min, 44 sec
2	5/21/2020 <br><br>5:40:46 AM	m9783.xxx.xx.163.com	ME1AUxxT021.mail.protection.outlook.com	Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384)	3 sec
3	5/21/2020 <br><br>5:40:48 AM	ME1AUS01FTxx1.eop-Axxx1.prod.protection.outlook.com	MEXPR01Cxxx1.outlook.office365.com	Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384)	2 sec
4	5/21/2020 <br><br>5:40:49 AM	MEXPR0xxx0131.auxxrd01.prod.outlook.com	PS1PR06Mxxx29.apcxxd06.prod.outlook.com	Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384)	1 sec

Original Message Headers

Received: from MExxxCA0131.axxxx01.prx.outlook.com (2603:xxx:200:xx::16)
 by PS1PR06MB2629.axxx.prxx.outlook.com (2603:xxx:803:xx::18) with
 Microsoft SMTP Server (version=TLS1_2,
 cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3000.25; Thu, 21 May
 2020 05:40:49 +0000<***因隐私隐患已删除个人敏感信息***>

Answer 1

Wangmiya2 您好,

从您提供的错误信息来看，您的邮件是从Office 365邮件服务器发送邮件到非Office 365邮件服务器出现问题的，那么您的账号应该是Office 365商务版账号。但是根据我的进一步检查，您的账户使用的似乎不是Office 365邮件服务器，如果是这样的话，我能问下您的账号类型是什么吗？您的账号是在哪个服务器托管的呢？

谢谢,

Betty

Answer 2

请问 我的365账号 指的是什么呢？

Answer 3

Wangmiya2 您好,

谢谢您的快速反馈，是的，如我第一条回复里提到的那样，这种错误信息表明这个问题不是微软这边识别到的具体问题，而且它表明是收件方服务器拒绝了来自您的邮件流，因此需要您联系收件方那边做进一步确认，看看是不是他们那边设置了什么规则或者政策阻止了您的邮件。最好判断问题是与您的邮件服务器相关还是收件方邮件服务器相关的办法就是您尝试通过您的365账号向其他外部用户发送一封测试邮件，然后观察是否此邮件会被阻隔。

最好的祝福,

Betty

Answer 4

Betty

您好感谢您的解答。

我发的提示性内容就是全部的反馈。 因此没有“x-dg-ref header is too long”信息。 我也没有使用outlook发送。用的是网易邮箱大师。

我发现erro提示是客户邮件服务器xxx.xxm.au禁止接受从我邮件域名xxx-xxx.com 里发出的任何邮件 。

我用我同事的邮箱 但是也包含@xxx-xxx.com 也是发送失败。

这么看 是不是i客户那边的设置呢？

谢谢

Answer 5

Wangmiya2 您好,

感谢您在Microsoft 365商务版论坛发表疑问，很高兴在这为您答疑，为了保护您的信息安全，我已经帮您将一些个人信息覆盖了。对于这个问题，就像NDR邮件里描述的那样，这种问题同样是由收件人的邮件组织返回的非特定错误，从您的NDR来看，我不确定您是否因为某些原因隐藏了一些信息，您可以再次检查下是否NDR里包含“x-dg-ref header is too long”信息，如果有的话，建议您检查是否Outlook在使用RTF格式发送邮件，要是答案是“Yes”的话，那么这需要您将格式改为HTML.

如果NDR里确实不包含“x-dg-ref header is too long”信息，那么这个问题就是一个非特定的问题，并且由于错误是由收件人的电子邮件组织返回的，我们的建议是联系收件方的管理员做进一步检查，关于如何处理这种问题的详细步骤和方案，您可以参考以下文档：

https://docs.microsoft.com/zh-cn/exchange/mail-flow-best-practices/non-delivery-reports-in-exchange-online/fix-error-code-550-5-0-350-in-exchange-online

再次感谢您对我们工作的支持与理解。

最好的祝福,

Betty