SMTP 214 Help Message vs 354 Start Mail Input
SMTP 214 (Help Message) is a 2xx Positive Completion response, while 354 (Start Mail Input) is a 3xx Positive Intermediate response. 214 indicates that 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. In contrast, 354 means that the server is ready to receive the message body. The client should begin sending the email content (headers and body) and terminate with a single line containing only a period (CRLF.CRLF).
描述
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.
何时出现
After sending the HELP command to the SMTP server. The response lists available commands or provides usage details for the command you specified.
如何修复
No fix needed — this is a normal informational response. Use the provided help text to understand which commands the server supports.
描述
The server is ready to receive the message body. The client should begin sending the email content (headers and body) and terminate with a single line containing only a period (CRLF.CRLF).
何时出现
After sending the DATA command. The server is now waiting for you to type or stream the email message, ending with a dot on its own line.
如何修复
Send your message content followed by a line with just a period (.) to signal the end. If you get an error after this, check that your message does not contain a bare period on a line by itself within the body.
主要区别
214 is a 2xx Positive Completion response, while 354 is a 3xx Positive Intermediate response.
SMTP 214: 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.
SMTP 354: The server is ready to receive the message body. The client should begin sending the email content (headers and body) and terminate with a single line containing only a period (CRLF.CRLF).
You encounter 214 when after sending the HELP command to the SMTP server. The response lists available commands or provides usage details for the command you specified.
You encounter 354 when after sending the DATA command. The server is now waiting for you to type or stream the email message, ending with a dot on its own line.
何时使用哪个
For 214 (Help Message): No fix needed — this is a normal informational response. Use the provided help text to understand which commands the server supports. For 354 (Start Mail Input): Send your message content followed by a line with just a period (.) to signal the end. If you get an error after this, check that your message does not contain a bare period on a line by itself within the body.