But your can use their smtp server. For instance: netzero: smtp.netzero.com; 3web: smtp.3web.net. I do not know the juno's smtp server address. At the same time, you still can use the pop3 service from outside network, because they did not freezed that. For example:with 3web, for firstname.lastname@example.org. you can use pop3 server: pop.21cn.com, but smtp: smtp.3web.net.