SMTP 214 Help Message vs 334 Server Challenge
SMTP 214 (Help Message) is a 2xx Positive Completion response, while 334 (Server Challenge) 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, 334 means that the server is issuing an authentication challenge as part of the SASL authentication exchange. The response contains a Base64-encoded challenge that the client must decode and respond to.
Beschreibung
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.
Wann Sie es sehen
After sending the HELP command to the SMTP server. The response lists available commands or provides usage details for the command you specified.
Wie man es behebt
No fix needed — this is a normal informational response. Use the provided help text to understand which commands the server supports.
Beschreibung
The server is issuing an authentication challenge as part of the SASL authentication exchange. The response contains a Base64-encoded challenge that the client must decode and respond to.
Wann Sie es sehen
During the AUTH command handshake. The server is prompting you for your username or password (Base64-encoded) as part of the multi-step authentication process.
Wie man es behebt
Respond with the appropriate Base64-encoded credentials. If authentication keeps failing after responding, verify your credentials and ensure you are using the correct SASL mechanism.
Wesentliche Unterschiede
214 is a 2xx Positive Completion response, while 334 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 334: The server is issuing an authentication challenge as part of the SASL authentication exchange. The response contains a Base64-encoded challenge that the client must decode and respond to.
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 334 when during the AUTH command handshake. The server is prompting you for your username or password (Base64-encoded) as part of the multi-step authentication process.
Wann welchen verwenden
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 334 (Server Challenge): Respond with the appropriate Base64-encoded credentials. If authentication keeps failing after responding, verify your credentials and ensure you are using the correct SASL mechanism.