SMTP
214 Help Message
A help message response containing information about the server's supported commands or a specific command's usage. This is a human-readable reply to the HELP command.
When You See This Code
After sending the HELP command to the SMTP server. The response lists available commands or provides usage details for the command you specified.
How to Fix
No fix needed — this is a normal informational response. Use the provided help text to understand which commands the server supports.