Communicating with SMTP servers using SSL/TLS in Java

Overview 

        This article will demonstrate how to communicate with smtp servers using SSL/TLS in Java using Secure iNet Factory.

Code Example

        Download SMTPSslEx.java

               

01 import com.jscape.inet.email.EmailMessage; 02 import com.jscape.inet.smtpssl.SmtpSsl; 03 04 public class SMTPSslEx 05 { 06  public static void ImplicitSSL() throws Exception 07  { 08  // create new SmtpSsl instance 09  SmtpSsl ssl = new SmtpSsl("smtp.server.com",465); 10  // establish implicit SSL/TLS connection 11  ssl.connect(); 12  // create email message 13  EmailMessage message = new EmailMessage(); 14  message.setTo("to@domain.com"); 15  message.setFrom("from@domain.com"); 16  message.setSubject("Meeting today at 2:30 p.m."); 17  message.setBody("See you then");                            18  // send message 19  ssl.send(message); 20  // disconnect 21  ssl.disconnect(); 22  } 23   24  public static void ExplicitSSL() throws Exception 25  { 26  // create new SmtpSsl instance 27  SmtpSsl ssl = new SmtpSsl("smtp.server.com",25); 28  // set connection type to use STARTTLS command 29  ssl.setConnectionType(SmtpSsl.STARTTLS); 30  // establish implicit SSL/TLS connection 31  ssl.connect(); 32  // create email message 33  EmailMessage message = new EmailMessage(); 34  message.setTo("to@domain.com"); 35  message.setFrom("from@domain.com"); 36  message.setSubject("Meeting today at 2:30 p.m."); 37  message.setBody("See you then");        38  // send message 39  ssl.send(message); 40  // disconnect 41  ssl.disconnect(); 42  } 43   44  public static void main(String[] args) 45  { 46  try 47  { 48  ImplicitSSL(); 49  ExplicitSSL(); 50  } 51  catch (Exception e) 52  { 53  e.printStackTrace(); 54  } 55  } 56 } Lines 1-2   : Necessary import statements. Lines 6-22  : Connect to SMTP server using implicit SSL. Lines 24-42 : Connect to SMTP server using explicit SSL.