私はJavaMailAPIを利用して、メールを送信するアプリを開発しています。yahooまたはgmailでホスティングしているメールサーバーを使用すれば、メールを正常に送信できます。しかし、自分のメールサーバーを使おうとすると、メールを送信できません。失敗の原因として考えられるものは何ですか。デバイスでアプリを実行すると、「メールが送信されませんでした」と表示されるため、例外は発生しません。アプリをSMTPサーバーに正常に接続できるようにプログラムを変更するにはどうすればよいですか、または表示する詳細情報を取得して接続に失敗した理由を理解できるようにするにはどうすればよいですか。
これが私のプログラムです：Sender.java
public class Sender extends Activity {
Button Send;
TextView text;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_sender);
Send = (Button) findViewById(R.id.mail);
text = (TextView) findViewById(R.id.textView1);
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
.permitAll().build();
StrictMode.setThreadPolicy(policy);
Send.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
new SendMail().execute();
}
});
}
private class SendMail extends AsyncTask<String, Void, Integer>
{
ProgressDialog pd = null;
String error = null;
Integer result;
@Override
protected void onPreExecute() {
// TODO Auto-generated method stub
super.onPreExecute();
pd = new ProgressDialog(Sender.this);
pd.setTitle("Sending Mail");
pd.setMessage("Please wait...");
pd.setCancelable(false);
pd.show();
}
@Override
protected Integer doInBackground(String... params) {
// TODO Auto-generated method stub
MailSender sender = new MailSender("me@mysmtp.com", "password");
sender.setTo(new String[]{"you@mysmtp.com", "me@gmail.com"});
sender.setFrom("me@mysmtp.com");
sender.setSubject("Test mail");
sender.setBody("This is the mail body");
try {
if(sender.send()) {
System.out.println("Message sent");
return 1;
} else {
return 2;
}
} catch (Exception e) {
error = e.getMessage();
Log.e("SendMail", e.getMessage(), e);
}
return 3;
}
protected void onPostExecute(Integer result) {
pd.dismiss();
if(error!=null) {
text.setText(error);
}
if(result==1) {
Toast.makeText(Sender.this,
"Email was sent successfully.", Toast.LENGTH_LONG)
.show();
} else if(result==2) {
Toast.makeText(Sender.this,
"Email was not sent.", Toast.LENGTH_LONG).show();
} else if(result==3) {
Toast.makeText(Sender.this,
"There was a problem sending the email.",
Toast.LENGTH_LONG).show();
}
}
}
}
MailSender.java
public class MailSender extends Authenticator {
private String user;
private String password;
private String [] to;
private String from;
private String port;
private String sport;
private String host;
private String subject;
private String body;
private boolean auth;
private boolean debuggable;
private Multipart multi;
public MailSender(){
host = "web.mysmtp.com";
port = "25";
sport = "25";
user = "";
password = "";
from = "";
subject = "";
body = "";
debuggable = false;
auth = true;
multi = new MimeMultipart();
// There is something wrong with MailCap, javamail can not find a handler for the multipart/mixed part, so this bit needs to be added.
MailcapCommandMap mc = (MailcapCommandMap) CommandMap.getDefaultCommandMap();
mc.addMailcap("text/html;; x-java-content-handler=com.sun.mail.handlers.text_html");
mc.addMailcap("text/plain;; x-java-content-handler=com.sun.mail.handlers.text_plain");
mc.addMailcap("multipart/*;; x-java-content-handler=com.sun.mail.handlers.multipart_mixed");
mc.addMailcap("message/rfc822;; x-java-content-handler=com.sun.mail.handlers.message_rfc822");
CommandMap.setDefaultCommandMap(mc);
}
public MailSender(String user, String password){
this();
this.user = user;
this.password = password;
}
public boolean send() throws Exception {
Properties props = setProperties();
try{
Session session = Session.getInstance(props, this);
session.setDebug(true);
MimeMessage msg = new MimeMessage(session);
msg.setFrom(new InternetAddress(from));
InternetAddress[] addressTo = new InternetAddress[to.length];
for(int i=0; i<to.length; i++){
addressTo[i] = new InternetAddress(to[i]);
}
msg.setRecipients(MimeMessage.RecipientType.TO, addressTo);
msg.setSubject(subject);
msg.setSentDate(new Date());
BodyPart messageBodyPart = new MimeBodyPart();
messageBodyPart.setText(body);
multi.addBodyPart(messageBodyPart);
msg.setContent(multi);
Transport transport = session.getTransport("smtps");
transport.connect(host, 25, user, password);
transport.sendMessage(msg, msg.getAllRecipients());
transport.close();
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
public void addAttachment(String filename) throws Exception {
BodyPart messageBodyPart = new MimeBodyPart();
DataSource source = new FileDataSource(filename);
messageBodyPart.setDataHandler(new DataHandler(source));
messageBodyPart.setFileName(filename);
multi.addBodyPart(messageBodyPart);
}
@Override
public PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(user, password);
}
private Properties setProperties() {
Properties props = new Properties();
props.put("mail.smtp.host", host);
if(debuggable) {
props.put("mail.debug", "true");
}
if(auth) {
props.put("mail.smtp.auth", "true");
}
props.put("mail.smtp.port", port);
props.put("mail.smtp.socketFactory.port", sport);
props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
props.put("mail.smtp.socketFactory.fallback", "false");
return props;
}
public void setTo(String[] toAddress) {
this.to = toAddress;
}
public void setFrom(String fromAddress) {
this.from = fromAddress;
}
public void setSubject(String subject) {
this.subject = subject;
}
public void setBody(String body) {
this.body = body;
}
}
エラーログのエラーメッセージ：
08-15 11:21:37.284: W/System.err(2553): javax.net.ssl.SSLHandshakeException: javax.net.ssl.SSLProtocolException: SSL handshake aborted: ssl=0x5c075548: Failure in SSL library, usually a protocol error
08-15 11:21:37.291: W/System.err(2553): Caused by: javax.net.ssl.SSLHandshakeException: javax.net.ssl.SSLProtocolException: SSL handshake aborted: ssl=0x5c075548: Failure in SSL library, usually a protocol error
08-15 11:21:37.299: W/System.err(2553): Caused by: javax.net.ssl.SSLProtocolException: SSL handshake aborted: ssl=0x5c075548: Failure in SSL library, usually a protocol error