Slow Socket Creation

Question

Hi all,
I'm trying to connect to my smtp server with a socket but it takes several minutes to create the socket.
Here is the code to reproduce my problem :
public static void main(String[] args) {
          long start,duration;
          ProxySelector.setDefault(null);
          start = System.currentTimeMillis();
          Socket socket = new Socket(Proxy.NO_PROXY);
          duration = System.currentTimeMillis() - start;
          System.out.println("new Socket en " + duration+ "ms");
        // l'adresse IP de la cible
        start = System.currentTimeMillis();
        InetAddress ipAddr;
          try {
               ipAddr = InetAddress.getByName(CMain.SMTP_SERVER);
        duration = System.currentTimeMillis();
          // Socket de la cible
        start = System.currentTimeMillis();
        InetSocketAddress endPoint = new InetSocketAddress(ipAddr, 25);
        duration = System.currentTimeMillis() - start;
        System.out.println("endPoint en " + duration+ "ms");
        // Socket locale
        if (!socket.isBound()) {
            start = System.currentTimeMillis();
            socket.bind(null);
            duration = System.currentTimeMillis() - start;
            System.out.println("Bind en "+ duration + "ms");
        System.out.println("Est-on connecté? " + socket.isConnected());
        // Création de la connexion
        start = System.currentTimeMillis();
        socket.connect(endPoint);
        duration = System.currentTimeMillis() - start;
        System.out.println("Connexion à " + CMain.SMTP_SERVER + ": 25 en "+ duration + "ms");
        // Properties of the current socket
        System.out.println("Socket: " + socket);
        socket.close();
          } catch (UnknownHostException e) {
               // TODO Auto-generated catch block
               e.printStackTrace();
          } catch (IOException e) {
               // TODO Auto-generated catch block
               e.printStackTrace();
The output :
new Socket en 189001ms
endPoint en 0ms
Bind en 0ms
Est-on connecté? false
Connexion à 127.0.0.1 : 25 en 0ms
Socket: Socket[addr=localhost/127.0.0.1,port=25,localport=35106]Java version :
java version "1.6.0_07"
Java(TM) SE Runtime Environment (build 1.6.0_07-b06)
Java HotSpot(TM) 64-Bit Server VM (build 10.0-b23, mixed mode)My /etc/hosts file :
127.0.0.1       localhost
XX.XXX.XXX.XXX    XXXXX
# The following lines are desirable for IPv6 capable hosts
XXXXXX ::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhostsMy OS is debian 4.0.
When I telnet my smtp server, the connection is immediate.
Thanks you for any help

Answer 1

No idea of what file I should configure on my server?
I must have made something wrong but I don't know what?
Thanks for any advice