Add proxy configuration support for notifiers

I would like to use Continuum for project, but I have problem - all ports are proxied. Not only HTTP but also mail and all others.
That is why I cant use mailnotifier. It breaks with error listed below. As I said timeout occures due to port is closed by proxy. I check it only for mail notifier but I beleive that it is related to all other notifiers.

{{
72414 [Thread-2] ERROR org.apache.maven.continuum.notification.ContinuumNotificationDispatcher - Error while trying to use the mailnotifier.
org.codehaus.plexus.notification.NotificationException: Exception while sending message.
at org.apache.maven.continuum.notification.mail.MailContinuumNotifier.sendMessage(MailContinuumNotifier.java:403)
at org.apache.maven.continuum.notification.mail.MailContinuumNotifier.buildComplete(MailContinuumNotifier.java:307)
at org.apache.maven.continuum.notification.mail.MailContinuumNotifier.sendNotification(MailContinuumNotifier.java:202)
at org.apache.maven.continuum.notification.DefaultContinuumNotificationDispatcher.sendNotification(DefaultContinuumNotificationDispatcher.java:173)
at org.apache.maven.continuum.notification.DefaultContinuumNotificationDispatcher.buildComplete(DefaultContinuumNotificationDispatcher.java:96)
at org.apache.maven.continuum.buildcontroller.DefaultBuildController.build(DefaultBuildController.java:378)
at org.apache.maven.continuum.buildcontroller.BuildProjectTaskExecutor.executeTask(BuildProjectTaskExecutor.java:47)
at org.codehaus.plexus.taskqueue.execution.ThreadedTaskQueueExecutor$ExecutorRunnable.run(ThreadedTaskQueueExecutor.java:103)
at java.lang.Thread.run(Thread.java:595)
Caused by: org.codehaus.plexus.mailsender.MailSenderException: Error while sending mail.
at org.codehaus.plexus.mailsender.javamail.JavamailMailSender.send(JavamailMailSender.java:217)
at org.apache.maven.continuum.notification.mail.MailContinuumNotifier.sendMessage(MailContinuumNotifier.java:399)
... 8 more
Caused by: javax.mail.MessagingException: Could not connect to SMTP host: smtp.gmail.com, port: 465;
nested exception is:
java.net.ConnectException: Connection timed out: connect
at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1213)
at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:311)
at javax.mail.Service.connect(Service.java:255)
at javax.mail.Service.connect(Service.java:134)
at javax.mail.Service.connect(Service.java:86)
at com.sun.mail.smtp.SMTPTransport.connect(SMTPTransport.java:144)
at javax.mail.Transport.send0(Transport.java:150)
at javax.mail.Transport.send(Transport.java:80)
at org.codehaus.plexus.mailsender.javamail.JavamailMailSender.send(JavamailMailSender.java:213)
... 9 more
}}