Java

Send an SMTP RSET Command

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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Java

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    boolean 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.

    CkMailMan mailman = new CkMailMan();

    //  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");

    //  Open the connection.

    success = mailman.OpenSmtpConnection();
    if (success == false) {
        System.out.println(mailman.lastErrorText());
        return;
        }

    //  Reset the current SMTP mail transaction.
    success = mailman.SmtpReset();
    if (success == false) {
        System.out.println(mailman.lastErrorText());
        return;
        }

    success = mailman.CloseSmtpConnection();
    if (success == false) {
        System.out.println(mailman.lastErrorText());
        return;
        }

    System.out.println("Sent SMTP RSET.");
  }
}