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When you send an email message that encounters a relay error, your SMTP (outgoing) email server might return your email message with an error message such as one of the following: "The message could not be sent because one of the recipients was rejected by the server.
SMTP Error 550 is a response from the recipient’s mail server that signifies a failure in email delivery. The error is part of the Simple Mail Transfer Protocol (SMTP). When an email cannot be delivered, the server sends back a 550 error code.
Aug 30, 2023 · 550 Message headers fail syntax check. When you go into the error you see that the email address is missing, it will just show the name, e.g. "Office" rather than "Office"<*** Email address is removed for privacy ***>. Why does this happen even when replying to emails? What can I do to fix it please?
The SMTP error code of 550 indicates that the email message has been rejected by the recipient’s mail server. It is important to note that the 550 codes indicate a permanent delivery failure meaning that the server will not re-attempt to deliver a message.
Apr 17, 2024 · What is the 550 Permanent Failure Error? The "550 Permanent Failure" error is a type of SMTP (Simple Mail Transfer Protocol) error that occurs when an email cannot be delivered to the recipient's mail server.
Nov 14, 2021 · What is causing the SMTP Error 550? We investigated this particular issue by looking at various user reports and the repair strategies that they tried to resolve the issue. As it turns out, the 500 Error status code typically means that the email could not be delivered because the recipient mailbox is not available.
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Resolving 550 5.1.1 SMTP errors: troubleshoot common problems and learn solutions for server communication, authentication setup, and address typos. The client and the server converse back and forth during an SMTP connection. The server responds to text commands from the client with number codes appended to messages.