Systems Approach to Computer Networks
A 5xx error refers to a class of server-side errors in the HTTP response status codes, indicating that the server failed to fulfill a valid request. These errors signify that something went wrong on the server side, preventing it from processing the request correctly, and are crucial for diagnosing problems related to electronic mail and SMTP systems. Understanding 5xx errors is important for troubleshooting email delivery issues and ensuring reliable communication across networks.
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