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Jeff TennessenFlag for United States of America

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Trouble using spamd in Ubuntu under VMWare

Hey folks,

I'm brand new to SpamAssassin and Linux. I am trying to set up a proof-of-concept project whereby a C# application connects to a spamd server, passes it the text of an RFC2822 message, and receives the details about whether the message is spam.

I have set up Ubuntu 7.10 in VMWare Server 1.0.4 build-56528. The host OS is Windows Server 2003, SP1. I installed SpamAssassin, and spamd appears to be running, according to the System Monitor. I started it with the following command:

# sudo spamd -d -c -m 5 -A --helper-home-dir --pidfile=/var/run/ is the IP address of the host machine. #ps waux | grep spam returns the following:

root      7261  0.0  5.6  32480 29040 ?        Ss   15:04   0:02 /usr/sbin/spamd -d -c -m 5 -A --helper-home-dir --pidfile=/var/run/
root      7262  0.0  5.2  32480 27240 ?        S    15:04   0:00 spamd child
root      7263  0.0  5.2  32480 27152 ?        S    15:04   0:00 spamd child
1000      8814  0.0  0.1   2972   752 pts/0    R+   16:05   0:00 grep spam

# netstat -luntp | grep 783 returns:

tcp        0     0 *              LISTEN      -

However, when I try to connect from my C# app, I get the following error:

System.Net.Sockets.SocketException: No connection could be made because the target machine actively refused it

I've attached the code from my test app (adapted from VB.NET code found here: When I run the application on the host server, this is what ends up in the TextBox:

Preparing data...
Sending data...

System.Net.Sockets.SocketException: No connection could be made because the target machine actively refused it
   at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)
   at System.Net.Sockets.Socket.Connect(EndPoint remoteEP)
   at SATest.Form1.Form1_Load(Object sender, EventArgs e) in C:\Documents and Settings\jtennessen\My Documents\Visual Studio 2005\Projects\SATest\SATest\Form1.cs:line 62

Because of my inexperience with SpamAssassin and Linux, I am unsure what to do to troubleshoot this. If anyone can point me in the right direction, I would be most grateful!



using System;
using System.Net;
using System.Text;
using System.Windows.Forms;
namespace SATest
    public partial class Form1 : Form
        public Form1()
        private void Form1_Load(object sender, EventArgs e)
                textBox1.Text += "Preparing data...\r\n";
                StringBuilder SB = new StringBuilder();
                SB.Append("PROCESS SPAMC/1.0");
                SB.Append("\r\nSubject: Test spam mail (GTUBE)");
                SB.Append("\r\nMessage-ID: <>");
                SB.Append("\r\nDate: Wed, 23 Jul 2003 23:30:00 +0200");
                SB.Append("\r\nFrom: Sender <>");
                SB.Append("\r\nTo: Recipient <>");
                SB.Append("\r\nPrecedence: junk");
                SB.Append("\r\nMIME-Version: 1.0");
                SB.Append("\r\nContent-Type: text/plain; charset=us-ascii");
                SB.Append("\r\nContent-Transfer-Encoding: 7bit");
                SB.Append("\r\nIf your spam filter supports it, the GTUBE " + 
                          "provides a test by which you");
                SB.Append("\r\ncan verify that the filter is installed " + 
                          "correctly and is detecting incoming");
                SB.Append("\r\nspam. You can send yourself a test mail " + 
                          "containing the following string of");
                SB.Append("\r\ncharacters (in upper case and with no white " +
                          "spaces and line breaks):");
                SB.Append("\r\nXJS*C4JDBQADN1.NSBN3*2IDNEN*GTUBE-STANDARD-" + 
                SB.Append("\r\nYou should send this test mail from an " + 
                          "account outside of your network.");
                Byte[] buffer = Encoding.ASCII.GetBytes(SB.ToString());
                textBox1.Text += "Sending data...\r\n";
                System.Net.Sockets.Socket socket = 
                    new System.Net.Sockets.Socket(
                IPEndPoint ipe = 
                    new IPEndPoint(IPAddress.Parse(""), 783);
                //This is the line on which the error occurs:
                textBox1.Text += "Receiving data\r\n";
                Int32 r;
                    Byte[] recbuf = new Byte[1024];
                    r = socket.Receive(recbuf);
                    textBox1.Text += Encoding.ASCII.GetString(recbuf, 0, r);
                while (r != 0);
                textBox1.Text += "OK\r\n";
            catch (Exception ex)
                textBox1.Text += "\r\n" + ex.ToString() + "\r\n";

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Yep, that does it! It leads to a new problem, but I'll start another Q for that. Thanks!

Never mind, I figured out the other problem. Thanks again, grblades!