SMTP Error 530 typically indicates an authentication problem when sending emails, often due to incorrect login details. However, it can also signify issues like the sender’s IP being blacklisted or the recipient’s email address being invalid. This error reflects either a failure to authenticate with the email server or being blocked due to server policies or security measures.
Resolving the Error – Solution
To address SMTP Error 530:
- Verify Login Credentials: Ensure that the username and password in your email client are correct and up to date.
- Check for Blacklisting: Determine if your IP address has been blacklisted by the recipient’s server. If so, follow the necessary steps to request removal from the blacklist.
- Validate Recipient Email Address: Confirm that the email address of the recipient is correct and active.
- Review Server Authentication Requirements: Make sure your email setup complies with your server’s authentication protocols. If needed, adjust settings for ports and security protocols.
- Use an SMTP Plugin if Necessary: For WordPress sites, using a plugin like Easy WP SMTP can help manage SMTP settings and ensure proper authentication for email sending