项目中直接写了个发邮件的东东
测试环境下一切正常，一放到公网就出错，错误信息：
javax.mail.MessagingException: Could not connect to SMTP host: smtp.163.com, port: 25;
nested exception is:
java.net.SocketException: Software caused connection abort: connect
at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1008)
at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:197)
at javax.mail.Service.connect(Service.java:233)
at javax.mail.Service.connect(Service.java:134)
at Foo.main(Foo.java:51)
原因：
邮件端口（port 25）与杀毒软件McAfee冲突，关掉McAfee就可以发送成功拉