Email error 550 5.7.1 'Unable to relay a message' or 'Client was not authenticated' is an error code that prevents sending emails by either server or client. The meaning behind this particular set of numbers depends on what attributes it's related to—i.e., number 550 means "550 unable...
Hard bounces (500 Series): These indicate permanent problems with email delivery. Examples include non-existent email addresses (code 550), unauthorized users (code 551), or incorrect domain names (code 554). Hard bounces require immediate action, such as verifying the recipient's email address o...
仍需要有关错误代码 550 5.7.12 的帮助? 另请参阅 在发送电子邮件后收到错误时,这很令人沮丧。 本主题介绍在未送达报告中看到状态代码 550 5.7.12 或 5.7.12(也称为 NDR、退回邮件、传递状态通知或 DSN)时可以执行的操作。 当收件人配置为拒绝从组织外部发送的邮件时,你将看到此自动通知。
When sending email to a user on the Symantec Email Security.cloud service, the message is rejected. The sender receives a non-delivery email with a 500 series error code indicating that the recipient is invalid. <username@example.com>: 550-Invalid recipient <username@example.com> 550 (#5.1....
For more information, see Fix email delivery issues for error code 5.1.8 in Exchange Online. 5.1.10 Recipient not found The recipient's <SMTP Address> wasn't found by SMTP address lookup. For more information, see Fix email delivery issues for error code 550 5.1.10 in Exchange Online. 55...
Based on error code 550 5.7.1, typically, this error indicates that a security setting in your organization or a security setting in the recipient's organization is preventing your message from reaching the recipient. Please try to fix it in the way of this document: Fix NDR err...
number of mail messages from a POP address I added using a domain that I own, set up in Zoho and verified. Anytime I've tried sending a message from any account other than a Yahoo account, I get the error message "Reason 550 #5.1.0 Address Rejected cannot sent to XXXXX@YY...
错误消息:550 RC:LD你想达到的电子邮件帐户,并没有存在。 翻译结果2复制译文编辑译文朗读译文返回顶部 错误消息: 550 RC:LD 的电子邮件帐户,您试图达成并不存在。 翻译结果3复制译文编辑译文朗读译文返回顶部 错误消息: 550 RC:LD 的电子邮件帐户,您试图达成并不存在。
problems with the recipient's email address. By verifying the email settings in Microsoft 365, you can ensure that your emails are set up correctly and minimize the chances of future bounce-backs. Check out theFix NDR error code "550 5.1.1" through "550 5.1.20" in Exchange Onlinearticle....
550 user not exist 550 User not found 554 delivery error: dd Sorry your message to $EMAIL cannot be delivered. This account has been disabled or discontinued 554 delivery error: dd This user doesn’t have a $DOMAIN account ($EMAIL) The email return code includes the following informa...