JavaMail的Transport.send(msg)或Transport.connect
JavaMail中的Transport.send(msg)或Transport.connect(),在Windows下完全正常,但在linux下(redhat/CentOs),循环连续发送n次,基本上总会在20几次时停顿不动,用netstat -utlan|grep :25|grep EST查看tcp状态,发现一直是ESTABLISHED状态,不知道是不是JavaMail的bug
方法1:直接调用Transport.send
debug("send mail[" + i + "] start...");
Transport.send(msg);
debug("send mail[" + i + "] end.");
方法2:先connect再sendMessage
Transport transport = session.getTransport("smtp");
debug("send mail[" + i + "] start...");
transport.connect();
debug("send mail[" + i + "] end.");
transport.sendMessage(message, message.getAllRecipients());
大伙可以用JavaMail自带的demo/msgmultisendsample.java作测试。