554 5.4.6 mail loop detected
A classic error!
The "554 5.4.6 Mail loop detected" error is a common issue that occurs when a mail server detects a loop in the delivery process. Here's what it means:
- "554" is the SMTP error code, which indicates a permanent failure.
- "5.4.6" is the specific error code, which means "Mail loop detected".
- "Mail loop detected" means that the mail server has detected a situation where a message is being sent back and forth between the same two mail servers, creating an infinite loop.
This error can occur due to various reasons, such as:
- Misconfigured mail server settings: If the mail server is not properly configured, it may not be able to deliver the message correctly, leading to a loop.
- Email forwarding loops: If an email is forwarded to another email address, and that email address is also forwarded to the original email address, it can create a loop.
- Virus or malware: Malicious software can manipulate email headers to create a loop.
- DNS issues: DNS (Domain Name System) issues can cause mail servers to get stuck in a loop.
To resolve this issue, you can try the following:
- Check your mail server settings: Verify that your mail server is properly configured and that there are no issues with the server's settings.
- Check email forwarding loops: Review your email forwarding settings to ensure that there are no loops.
- Run a virus scan: Run a virus scan on your email client and server to detect and remove any malware.
- Check DNS settings: Verify that your DNS settings are correct and that there are no issues with your domain's DNS configuration.
- Contact your email provider: If you're using a third-party email provider, contact their support team to see if they can help resolve the issue.
If none of these steps resolve the issue, you may need to seek further assistance from your email provider or a qualified IT professional.