Send an SMTP RSET Command

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Demonstrates the Chilkat MailMan.SmtpReset method, which sends an SMTP RSET command to the server. RSET resets the server-side state of the current mail transaction. This example opens a connection, sends RSET, and closes.

Background: During an SMTP session a message is built up across MAIL FROM and RCPT TO commands. If you need to abandon that partially-specified transaction — say an error occurred midway — RSET clears it without dropping the connection, so the same authenticated session can start a fresh message. It's a lightweight way to recover in-session rather than reconnecting.

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bool success = false;

//  Demonstrates the MailMan.SmtpReset method, which sends an SMTP RSET command to the server.
//  RSET resets the server-side state of the current mail transaction.

Chilkat.MailMan mailman = new Chilkat.MailMan();

//  Configure the SMTP server connection.
mailman.SmtpHost = "smtp.example.com";
mailman.SmtpPort = 465;
mailman.SmtpSsl = true;
mailman.SmtpUsername = "user@example.com";
mailman.SmtpPassword = "myPassword";

//  Open the connection.

success = mailman.OpenSmtpConnection();
if (success == false) {
    Debug.WriteLine(mailman.LastErrorText);
    return;
}

//  Reset the current SMTP mail transaction.
success = mailman.SmtpReset();
if (success == false) {
    Debug.WriteLine(mailman.LastErrorText);
    return;
}

success = mailman.CloseSmtpConnection();
if (success == false) {
    Debug.WriteLine(mailman.LastErrorText);
    return;
}

Debug.WriteLine("Sent SMTP RSET.");