SMTP 211 System Status vs 354 Start Mail Input
SMTP 211 (System Status) is a 2xx Positive Completion response, while 354 (Start Mail Input) is a 3xx Positive Intermediate response. 211 indicates that a system status reply providing information about the mail server's current state. This is typically sent in response to a HELP or system inquiry 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).
Descrição
A system status reply providing information about the mail server's current state. This is typically sent in response to a HELP or system inquiry command.
Quando você o vê
When querying the mail server for its status or capabilities. The server is sharing diagnostic or informational details about itself.
Como corrigir
No fix needed — this is an informational response. If the status indicates a problem, review the server's configuration or contact the mail administrator.
Descrição
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).
Quando você o vê
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.
Como corrigir
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.
Diferenças principais
211 is a 2xx Positive Completion response, while 354 is a 3xx Positive Intermediate response.
SMTP 211: A system status reply providing information about the mail server's current state. This is typically sent in response to a HELP or system inquiry 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 211 when when querying the mail server for its status or capabilities. The server is sharing diagnostic or informational details about itself.
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.
Quando usar qual
For 211 (System Status): No fix needed — this is an informational response. If the status indicates a problem, review the server's configuration or contact the mail administrator. 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.