I am trying to configure Adempiere ERP System on my windows 7 Platform.

I have Java 1.6, Postgresql 9.0, 4 GB of RAM.

I have downloaded the Adempiere source code through sub-eclipse svn repository by following the steps from http://www.adempiere.com/Create_your_ADempiere_development_environment

It was successful download, but I am trying build the Adempiere by running the **Adempiere/utils_dev/RUN_build.bat** file by following the steps http://www.adempiere.com/ADempiere_Installation#AdempiereERP.2C_JDK_and_PostgreSQL_Step_by_Step_Installation_Guide_for_Windows
,
then I am getting the error -

    MailLogger failed to send e-mail!
    java.net.SocketException: Network is unreachable: connect
            at java.net.PlainSocketImpl.socketConnect(Native Method)
            at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
            at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
            at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
            at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
            at java.net.Socket.connect(Socket.java:519)
            at java.net.Socket.connect(Socket.java:469)
            at java.net.Socket.<init>(Socket.java:366)
            at java.net.Socket.<init>(Socket.java:180)
            at org.apache.tools.mail.MailMessage.connect(MailMessage.java:391)
            at org.apache.tools.mail.MailMessage.<init>(MailMessage.java:174)
            at org.apache.tools.ant.listener.MailLogger.sendMail(MailLogger.java:200
    )
            at org.apache.tools.ant.listener.MailLogger.buildFinished(MailLogger.jav
    a:134)
            at org.apache.tools.ant.Project.fireBuildFinished(Project.java:1848)
            at org.apache.tools.ant.Main.runBuild(Main.java:688)
            at org.apache.tools.ant.Main.startAnt(Main.java:187)
            at org.apache.tools.ant.Main.start(Main.java:150)
            at org.apache.tools.ant.Main.main(Main.java:240)
    Press any key to continue . . .

Please help me to resolve the error of **MailLogger failed to send e-mail**.
Thanks in advance.