[JSP] Invio mail

[Eddie23]

Devo realizzare un sito in cui, effettuata l'iscrizione, viene inviata l'email di attivazione dell'account. Solo che mi restituisce un errore:
_____________________________________________
type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: An exception occurred processing JSP page /sendmail.jsp at line 43

40: msg.setSentDate(new Date());
41: msg.setText(messageText);
42:
43: Transport.send(msg);
44:
45: out.println("Mail was sent to " + to);
46: out.println(" from " + from);


Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:510)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:401)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)

root cause

javax.servlet.ServletException: javax.mail.MessagingException: Could not connect to SMTP host: smtp.hotmail.com, port: 25;
nested exception is:
java.net.ConnectException: Connection timed out: connect
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:862)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:791)
org.apache.jsp.sendmail_jsp._jspService(sendmail_jsp.java:110)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)

root cause

javax.mail.MessagingException: Could not connect to SMTP host: smtp.hotmail.com, port: 25;
nested exception is:
java.net.ConnectException: Connection timed out: connect
com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1934)
com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:638)
javax.mail.Service.connect(Service.java:295)
javax.mail.Service.connect(Service.java:176)
javax.mail.Service.connect(Service.java:125)
javax.mail.Transport.send0(Transport.java:194)
javax.mail.Transport.send(Transport.java:124)
org.apache.jsp.sendmail_jsp._jspService(sendmail_jsp.java:95)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)

root cause

java.net.ConnectException: Connection timed out: connect
java.net.PlainSocketImpl.socketConnect(Native Method)
java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:351)
java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:213)
java.net.PlainSocketImpl.connect(PlainSocketImpl.java:200)
java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
java.net.Socket.connect(Socket.java:529)
java.net.Socket.connect(Socket.java:478)
com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:288)
com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:231)
com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1900)
com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:638)
javax.mail.Service.connect(Service.java:295)
javax.mail.Service.connect(Service.java:176)
javax.mail.Service.connect(Service.java:125)
javax.mail.Transport.send0(Transport.java:194)
javax.mail.Transport.send(Transport.java:124)
org.apache.jsp.sendmail_jsp._jspService(sendmail_jsp.java:95)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)

___________________________

Qualcuno mi sa dire cosa potrei fare per risolvere questo problema?
Grazie