SMTP 211 System Status vs 452 Insufficient Storage
SMTP 211 (System Status) is a 2xx Positive Completion response, while 452 (Insufficient Storage) is a 4xx Transient Negative 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, 452 means that the requested action was not taken because the server has insufficient system storage. The server cannot accept more mail until storage is freed.
Beschreibung
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.
Wann Sie es sehen
When querying the mail server for its status or capabilities. The server is sharing diagnostic or informational details about itself.
Wie man es behebt
No fix needed — this is an informational response. If the status indicates a problem, review the server's configuration or contact the mail administrator.
Beschreibung
The requested action was not taken because the server has insufficient system storage. The server cannot accept more mail until storage is freed.
Wann Sie es sehen
When the mail server's disk is full or the recipient's mailbox has exceeded its storage quota. The server cannot store additional messages.
Wie man es behebt
If you are the sender, retry later after the recipient frees up space. If you manage the server, clear disk space, increase quotas, or archive old messages.
Wesentliche Unterschiede
211 is a 2xx Positive Completion response, while 452 is a 4xx Transient Negative 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 452: The requested action was not taken because the server has insufficient system storage. The server cannot accept more mail until storage is freed.
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 452 when when the mail server's disk is full or the recipient's mailbox has exceeded its storage quota. The server cannot store additional messages.
Wann welchen verwenden
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 452 (Insufficient Storage): If you are the sender, retry later after the recipient frees up space. If you manage the server, clear disk space, increase quotas, or archive old messages.