Email: activation.jar and applet alert

Question

I have written code for sending email. I works on one machine with out errror. When I moved it to my server it gave error for the activation.jar file. After copying this file, the code worked, but now I get applet Alert popup with message as "The applet is attempting to invoke the java/lang/System.getProperty() operation on user home, I need to click on Allow to get the code working. How do I disable this popup?
What is the difference between settings on two machines. Is it some browser setting for applet or something else? I am using jre version 1.4.2_03 on Windows 2003 server.

Answer 1

No, I am not using Java Applet. I have written simple Java application with main which I run from Command prompt
I am not sure why the popup is displayed for Applet.
Here is the code:
import java.util.Properties;
import javax.mail.*;
import javax.mail.internet.*;
public class sendMail
public static void main(String args[])
     //set this variable to be your SMTP host
     String mailHost = "192.24.235.20";
     //set this variable to be your desired email recipient
String to = "testUser@mclaren";
//these variables come from the mail form
String from = "dctmUser@mclaren";
String subject = "JavaTest";
String body = "Test";
if ((from != null) && (to != null) && (subject != null) && (body != null)) // we have mail to send
try
//Get system properties
Properties props = System.getProperties();
//Specify the desired SMTP server
props.put("mail.smtp.host", mailHost);
// create a new Session object
Session session = Session.getInstance(props,null);
// create a new MimeMessage object (using the Session created above)
Message message = new MimeMessage(session);
message.setFrom(new InternetAddress(from));
message.setRecipients(Message.RecipientType.TO, new InternetAddress[] { new InternetAddress(to) });
message.setSubject(subject);
message.setContent(body, "text/plain");
Transport.send(message);
System.out.println("Message Sent");
catch (Throwable t)
System.out.println("Error: " + t.getMessage());
I can't attach the screen shot of the Applet Alert window, but below is the text I get on the Applet Alert window
First Window
Title: -- Applet Alert --
Text: The applet is attempting to invoke the java/lang/System.getProperty() operation on user home
Buttons: Allow, Disallow, Stop Applet
Second Window
Title: -- Applet Alert --
Text: The applet is attempting to perform read operation on file C:\Documents and Settings\Administrator\.mailcap
Buttons: Allow, Disallow, Stop Applet
Third Window
Title: -- Applet Alert --
Text: The applet is attempting to invoke the java/lang/System.getProperty() operation on user home
Buttons: Allow, Disallow, Stop Applet
Forth Window
Title: -- Applet Alert --
Text: The applet is attempting to perform read operation on file C:\j2sdk1.4.2_03\jre\lib\mailcap
Buttons: Allow, Disallow, Stop Applet
And following is the text output on the command prompt by the system:
C:\java>java sendMail *(this is my code file)*
Current policy properties
thread.thread_num_limited: true
file.write.state: disabled
net.connect_ex_dom_list:
mmc.sess_cab_act.block_unsigned: false
mmc.sess_cab_act.action: validate
mmc.sess_pe_act.block_blacklisted: false
mmc.sess_pe_act.block_invalid: true
jscan.sess_applet_act.stub_out_blocked_applet: true
file.destructive.in_list:
jscan.sess_applet_act.block_all: false
file.write.in_list:
file.nondestructive.in_list:
window.num_limited: true
file.read.state: disabled
jscan.session.origin_uri: http://www.guj.com.br/posts/downloadAttach/330
.java;jsessionid=76FF899CEACAB3CFFB48E3EEE4E0E89F
file.nondestructive.state: disabled
jscan.session.user_ipaddr: 10.122.3.106
net.connect_other: false
thread.thread_num_max: 8
file.destructive.ex_list:
file.nondestructive.ex_list:
file.write.ex_list:
jscan.sess_applet_act.sig_invalid: block
file.read.in_list:
mmc.sess_cab_act.block_invalid: true
jscan.session.policyname: TU1DIERlZmF1bHQgUG9saWN5
mmc.sess_pe_act.action: validate
thread.threadgroup_create: false
net.connect_in_dom_list:
net.bind_enable: false
jscan.sess_applet_act.sig_trusted: pass
jscan.session.user_name: 10.122.3.106
jscan.session.user_hostname:
file.read.ex_list:
jscan.sess_applet_act.sig_blacklisted: block
jscan.session.daemon_protocol: http
net.connect_src: true
jscan.sess_applet_act.unsigned: instrument
mmc.sess_pe_act.block_unsigned: false
file.destructive.state: disabled
mmc.sess_cab_act.block_blacklisted: true
window.num_max: 5
-->> returning Frame NULL
BaseDialog: owner frame is a java.awt.Frame
-->> returning Frame NULL
BaseDialog: owner frame is a java.awt.Frame
-->> returning Frame NULL
BaseDialog: owner frame is a java.awt.Frame
-->> returning Frame NULL
BaseDialog: owner frame is a java.awt.Frame
Message Sent *(This is the message I print from the code)*