Sends the NOOP command.
The server takes no action in response to a NOOP command except to send a positive response. (NOOP means "no operation".) An SMTP client may send the NOOP command to reset a connection timeout timer at the server.
The server always responds with a 250 reply to the NOOP command.
| Exception Type | Condition |
|---|---|
| Exception | If a network or protocol error occurs. |
SmtpClient Class | Hunny.Mail Namespace | NOOP command in the SMTP specification