Email registration

Hi For the user registration, I want to specify an smtp server in a non standard port(not the default port 25). Is it possible in xwiki. When I tried, the following error occurred. Can any one tell me what is wrong with the way I did. --- Error* :* Error number 10003 in 10: Exception while sending email from cpmishra(a)digitalglue.in to [Ljava.lang.String;@1ab3ff9 Wrapped Exception: 202.141.152.72:2525 com.xpn.xwiki.XWikiException: Error number 10003 in 10: Exception while sending email from cpmishra(a)digitalglue.in to [Ljava.lang.String;@1ab3ff9 Wrapped Exception: 202.141.152.72:2525 at com.xpn.xwiki.XWiki.sendMessage(XWiki.java:2697) at com.xpn.xwiki.XWiki.sendMessage(XWiki.java:2717) at com.xpn.xwiki.XWiki.sendValidationEmail(XWiki.java:2636) at com.xpn.xwiki.XWiki.sendValidationEmail(XWiki.java:2595) at com.xpn.xwiki.XWiki.createUser(XWiki.java:2568) at com.xpn.xwiki.web.RegisterAction.action(RegisterAction.java:42) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:149 etc. Wrapped Exception: java.net.UnknownHostException: 202.141.152.72:2525 at java.net.PlainSocketImpl.connect(Unknown Source) at java.net.SocksSocketImpl.connect(Unknown Source) at java.net.Socket.connect(Unknown Source) at java.net.Socket.connect(Unknown Source) at java.net.Socket.(Unknown Source) at java.net.Socket.(Unknown Source) at org.apache.commons.net.DefaultSocketFactory.createSocket(DefaultSocketFactory.java:53) at org.apache.commons.net.SocketClient.connect(SocketClient.java:162) at com.xpn.xwiki.XWiki.sendMessage(XWiki.java:2664) ---- Regards Roopesh