C++

Send a Raw SMTP Command

Demonstrates the Chilkat MailMan.SmtpSendRawCommand method, which sends a raw command to the SMTP server and returns the server's response. The second argument specifies the charset to use if the command contains non-US-ASCII characters, and the third indicates whether to base64-encode the command before sending. This example sends a raw NOOP on an open connection.

Background: SMTP is a line-based text protocol (EHLO, MAIL FROM, RCPT TO, DATA, QUIT), so a raw-command hook lets you issue anything Chilkat doesn't wrap — a server extension, or a custom step during a manual auth exchange. The base64 flag exists because some SMTP exchanges (notably AUTH challenge/response) require the argument to be base64-encoded on the wire.

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C++

#include <CkMailMan.h>

void ChilkatSample(void)
    {
    bool success = false;

    //  Demonstrates the MailMan.SmtpSendRawCommand method, which sends a raw command to the SMTP
    //  server and returns the server's response.  The 2nd argument is the charset used if the
    //  command contains non-US-ASCII characters, and the 3rd indicates whether to base64-encode
    //  the command before sending.

    CkMailMan mailman;

    //  Configure the SMTP server connection.
    mailman.put_SmtpHost("smtp.example.com");
    mailman.put_SmtpPort(465);
    mailman.put_SmtpSsl(true);
    mailman.put_SmtpUsername("user@example.com");
    mailman.put_SmtpPassword("myPassword");

    success = mailman.OpenSmtpConnection();
    if (success == false) {
        std::cout << mailman.lastErrorText() << "\r\n";
        return;
    }

    //  Send the raw SMTP NOOP command (not base64-encoded).
    const char *response = mailman.smtpSendRawCommand("NOOP","us-ascii",false);
    if (mailman.get_LastMethodSuccess() == false) {
        std::cout << mailman.lastErrorText() << "\r\n";
        return;
    }

    std::cout << "NOOP response: " << response << "\r\n";

    success = mailman.CloseSmtpConnection();
    if (success == false) {
        std::cout << mailman.lastErrorText() << "\r\n";
        return;
    }
    }