2023年5月17日 · You may refer to the article to troubleshoot this issue. See under OOF issues related to transport rules : https://learn.microsoft.com/en-us/exchange/troubleshoot/email-delivery/understand-troubleshoot-oof-replies#troubleshoot-oof-issues

Another solution would be to remove the license, but then you would need to create a mail flow rule (also known as a transport rule) to prevent the user from receiving email messages. Otherwise, the user would continue to receive messages for …

2024年4月8日 · The error message you describe as "550 5.7.1 Transport Rule RejectMessage; Message was rejected by organization policy" strongly indicates that there is some form of mail flow rule preventing the message from being transmitted.

2019年10月10日 · If only the specified external sender occurs, and an anti-spam rule is created in the organization. You can try to add external domain into “The sender’s domain is” exception of anti-spam transport rule.

2021年4月21日 · An email was rejected by one of my mail flow rules, and before I whitelist it, I want to know which rule it violated. This is the error I get in the Office 365 Message Trace. 550 5.7.1 TRANSPORT.RULES.RejectMessage; the message was rejected by organization policy.

2022年4月12日 · Reason: [{LED=550 5.7.1 TRANSPORT.RULES.RejectMessage; the message was rejected by organization policy};{MSG=};{FQDN=};{IP=};{LRT=}] But I don't get the 5.7.1. email report? I do get the report if I change to a regular recipient (normal user).

2019年10月1日 · While checking at protection.outlook.com, the message trace shows a delay/defer with the following message:- Reason: Reason: [{LED=};{MSG=};{FQDN=};{IP=};{LRT=}] Could anyone know the possible reason for this delay?

2022年8月9日 · Per your description if you're receiving the error 5.7.1, 550 5.7.1 this means the recipient email system is rejecting your message, we would recommend you follow trouble shooting steps shared in the official article Fix email delivery issues for error code 550 5.7.1 in Exchange Online | Microsoft Docs if this does not assist you may have to ...

2022年8月24日 · This usually means the receiving email server thinks you're a spammer. Could be related to the content of your emails, to your IP address, or that too many users have marked your previous emails a spam. Either way it's not a programming question and hence off-topic here. See How to Ask.

If you trace an email in the Exchange transport logs, you can see which transport rule was applied to the email: Reason: [{LED=550 5.7.1 TRANSPORT.RULES.RejectMessage; the message was rejected by organization policy}; Transport rule: ‘Block outgoing email to Gmail’