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Telnet 500 syntax error command unrecognized

The SMTP command currently used was unrecognized. Another possibility is that you are trying to use telnet and the telnet. Syntax error in parameters scanning. Check the syntax of the last command. When you test an email server through Telnet on the ASA and ESMTP or. certain commands, such as HELO or EHLO, return a 550 error that. 1 command not recognized. 2 syntax error XXX. SMTP uses several commands to communicate with mail servers. These commands are. 500 Syntax error, command unrecognized. The complete list of reply.

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    Telnet syntax unrecognized

    MTP commands A set of commands which comprise the control information. The Mail Transfer Protocol follows the specifications of the TELNET Protocol for all. Command okay 500 Syntax error, command unrecognized [ This may include. Error Description: This response is sent from the SMTP server when a remote SMTP client or host. 500 Syntax Error, command unrecognized. 451, Requested action aborted: local error in processing, 要求された処理を. 500, Syntax error, command unrecognized, 文法エラー、 コマンドが. In fact you can connect to the SMTP server via telnet. 500 Syntax error, command unrecognized [ e. , a command line too long] 501 Syntax. Below is a list of the Standard SMTP error codes and the Extended SMTP. 500 - Syntax error, command unrecognized; 501 - Syntax error in. SendBulkMail] Error sending e- mail.

    EHLO < hostname> 500 Syntax error, command " XXXX < hostname> " unrecognized.