Android™
Android™
Verify Connectivity to the SMTP Server
See more SMTP Examples
Demonstrates the Chilkat MailMan.VerifySmtpConnection method, which tests whether a TCP/IP connection can be established with the configured SMTP server. It verifies connectivity only — it does not authenticate. This example configures the SMTP host and checks whether it can be reached.
Background: When a send fails, it helps to know where it broke.
VerifySmtpConnection isolates the first hop — can the client even reach the server on the configured host and port, and complete the TLS handshake? A failure here points at networking, firewall, DNS, port, or certificate issues rather than credentials. Once connectivity is confirmed, VerifySmtpLogin tests the authentication step.Chilkat Android™ Downloads
// Important: Don't forget to include the call to System.loadLibrary
// as shown at the bottom of this code sample.
package com.test;
import android.app.Activity;
import com.chilkatsoft.*;
import android.widget.TextView;
import android.os.Bundle;
public class SimpleActivity extends Activity {
private static final String TAG = "Chilkat";
// Called when the activity is first created.
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Demonstrates the MailMan.VerifySmtpConnection method, which tests whether a TCP/IP
// connection can be established with the configured SMTP server. It verifies connectivity
// only (it does not authenticate).
CkMailMan mailman = new CkMailMan();
// Configure the SMTP server connection.
mailman.put_SmtpHost("smtp.example.com");
mailman.put_SmtpPort(465);
mailman.put_SmtpSsl(true);
// Test connectivity to the SMTP server.
boolean connected = mailman.VerifySmtpConnection();
if (connected == true) {
Log.i(TAG, "Successfully connected to the SMTP server.");
}
else {
Log.i(TAG, "Could not connect to the SMTP server.");
}
}
static {
System.loadLibrary("chilkat");
// Note: If the incorrect library name is passed to System.loadLibrary,
// then you will see the following error message at application startup:
//"The application <your-application-name> has stopped unexpectedly. Please try again."
}
}