如何在android中设置多个SMTP服务器？

smtp_host="smtp.gmail.com";
port=465;
tlsEnabled = true;
requiresAuth = false;

smtp_host="smtp.mail.yahoo.com";
port=465;
tlsEnabled = true; // false is OK as well
requiresAuth = true;  // false is OK as well
// login can have yahoo.com suffix OR not

smtp_host="smtp.live.com";
port=587;
tlsEnabled = false;
requiresAuth = true;