What Is Causing This Error?
The SMTP error 502 typically signals that certain email settings or commands, although recognized by the mail server, are currently disabled or not activated. Essentially, the server can identify the SMTP command but might not support it due to its configuration settings.
This leads the server to return the error to the mail client, indicating a command it doesn’t support or hasn’t been set up to execute.
Resolving the Error
When encountering the SMTP error 502, start by reviewing your email configurations. Check if any SMTP commands are being disallowed based on your current settings.
If the configurations seem in order, it may be necessary to modify settings within your email host. For the best outcome, reach out to your email hosting provider’s support for guidance.
To confirm the host, port, and credentials for your site, check your SendLayer SMTP settings. See Connecting Your Site With SMTP and Managing SMTP Credentials.
That’s it! Now you know the common causes of the 502 error and how to resolve it.
If you’d like to learn how to troubleshoot other common errors, check out the following docs: