553 sorry relay of mail is not allowed reflexion

It seems like you're getting an error message from your email provider or a mail relay service. The error message "553 Sorry, relay not allowed" typically indicates that the mail server is refusing to accept the email because it's not authorized to relay mail.

Here are a few possible reasons for this error:

  1. Authentication issues: The mail server may not be able to authenticate your email account or the sending IP address. Make sure you're using the correct username and password, and that your email account is set up to allow relaying.
  2. Relay restrictions: The mail server may have restrictions in place that prevent relaying of mail. Check your email provider's documentation or contact their support team to see if there are any specific settings or configurations that need to be made.
  3. Blacklisting: The mail server may have blacklisted your IP address or email account, which prevents it from sending mail. Check your IP address and email account to see if they're listed on any blacklists, and take steps to resolve any issues.
  4. Mail server configuration: The mail server may be configured to only accept mail from specific IP addresses or domains. Check your mail server's configuration to see if there are any restrictions in place.

To resolve this issue, you can try the following:

  1. Check your email account settings: Make sure your email account is set up correctly and that you're using the correct username and password.
  2. Verify your IP address: Check your IP address to see if it's listed on any blacklists. If it is, take steps to resolve the issue.
  3. Contact your email provider: Reach out to your email provider's support team to see if they can help you resolve the issue. They may be able to provide more specific guidance or assistance.
  4. Check your mail server configuration: Review your mail server's configuration to see if there are any restrictions in place that need to be adjusted.