"that domain isn't allowed to be relayed thru this MTA " : Problem and fix

> In the same day my Java program was at first able to

> send emails, then it failed because of those errors,

> after I ran Thunderbird it succeed again. So why did

> it failed after a few successful emails ? Someone did

> something on the server ?

Possibly your POP3 authentication only allows you to send

SMTP messages for a limited time.

> The FAQ says : "make sure you connect to your POP3

> Store on that mail server before sending mail".

>

> How to do that in Java mail ? Any sample code ?

Tons. Haven't you found the JavaMail sample code yet?

It's in the JavaMail download bundle.

Oh, and the FAQ answers this question. READ IT!!! Please?

bshannona at 2007-7-12 21:33:10 >

> So that means I need to set it repeatedly ?

Before every attempt to send a message, you need to have logged in

to your POP3 mailbox "recently".

> Is there a way to find from the server how often I need to reset it ?

No.

This is not a standard, this is a kludge used by some ISPs to prevent

people from using their mail servers to send spam.

bshannona at 2007-7-12 21:33:10 >

You can do it using JavaMail by successfully connecting to your POP3

server and providing the correct username and password.

Remember, this whole conversation is based on assumptions of what

your ISP is doing. I have no idea who your ISP is or what they're actually

doing.

bshannona at 2007-7-12 21:33:10 >

Yes, you are right, although I've been doing JavaMail for a while, I still don't have a complete view of it, at least not before your last email. I've used the store to get emails, and the transport to send emails, I didn't know where the POP3 fits in. Thanks, now I know where to get some sample code.

In the following situation, which mail server am I using to actually send an email :

<1> I start my Java email program at work

<2> The program logs me into my ISP's web account with Id/Password

<3> I send an email with my email address from this ISP (or another of my address from Yahoo or Gmail) to someone (any address)

In this case, am I using both of my work and ISP email server, or just the ISP server ? Thanks !

Frank

Ni_Mina at 2007-7-12 21:33:10 >

POP3 is a Store protocol, is it the only one being used now which works with JavaMail, and is it decided by the server ? If so, can I use another store protocol (if there is another one) to communicate with a server that uses POP3 ?

How to specify the full name in an email address, for example can I use the folllowing string as a valid email address ?

"Joe Smith"<joesmith@yahoo.com>

I see this format in Yahoo Mail.

Frank

Ni_Mina at 2007-7-21 22:53:35 >

> POP3 is a Store protocol, is it the only one being

> used now which works with JavaMail, and is it decided

> by the server ?

JavaMail also supports IMAP. Yes, the server decides which

protocols it will support.

> If so, can I use another store

> protocol (if there is another one) to communicate

> with a server that uses POP3 ?

Only if that server also supports the other protocol (e.g., IMAP).

> How to specify the full name in an email address, for

> example can I use the folllowing string as a valid

> email address ?

>

> "Joe Smith"<joesmith@yahoo.com>

See the InternetAddress class.

bshannona at 2007-7-21 22:53:35 >

I have a method listed below that tries to connect to a store :

public static void Login_To_Incoming_Server(String url,boolean Show_Alert,String host,String protocol,String port_number,String username,String password)

{

try

{

Properties props=System.getProperties();// Get a Properties object

Session session=Session.getInstance(props,null);// Get a Session object

session.setDebug(Debug);

Store store=null; // Get a Store object

if (url != null)// imap://username:password@mailstore.com|pop3://username:password@mailstore.com

{

// url==mailstore.com

store=session.getStore(new URLName(url.indexOf("://")==-1?protocol+"://"+username+":"+password+"@"+url:url));

if (Show_Alert)

store.addStoreListener(new StoreListener()

{

public void notification(StoreEvent e)

{

String s;

if (e.getMessageType()==StoreEvent.ALERT) s="ALERT: ";

else s="NOTICE: ";

Out(s+e.getMessage());

}

});

store.connect();

}

else

{

if (protocol != null) store=session.getStore(protocol);

else store=session.getStore();

if (host != null || username != null || password != null) store.connect(host,Integer.parseInt(port_number),username,password);

else store.connect();

}

}

catch (Exception e)

{

Out("url="+url+"\nhost="+host+"\nprotocol="+protocol+"\nport_number="+port_number+"\nusername="+username+"\npassword="+password);

e.printStackTrace();

}

}

But every time I use it, I got the following error :

===========================================================

javax.mail.AuthenticationFailedException: invalid user name or password.

at com.sun.mail.pop3.POP3Store.protocolConnect(POP3Store.java:146)

at javax.mail.Service.connect(Service.java:275)

or sometimes this :

javax.mail.AuthenticationFailedException: EOF on socket

at com.sun.mail.pop3.POP3Store.protocolConnect(POP3Store.java:146)

at javax.mail.Service.connect(Service.java:275)

===========================================================

I've checked the parameters, they work fine in Thunderbird, I can retrieve messages with them, but when I run this method with them, I got the above errors, is there anything wrong the the above function ?

Frank

Ni_Mina at 2007-7-21 22:53:35 >

How to use "protocol trace" ?

I tried to run both with and without url, when running with null url, the method should create a connection without using the null value, when I pass it a url like : mailstore.com it should create a complete one such as : pop3://username:password@mailstore.com

There was no special characters in them.

Frank

Ni_Mina at 2007-7-21 22:53:35 >

Ok, here are the trace results for all three of my accounts :

==========================================================================================

DEBUG: setDebug: JavaMail version 1.4ea

DEBUG: getProvider() returning javax.mail.Provider[STORE,pop3,com.sun.mail.pop3.POP3Store,Sun Microsystems, Inc]

DEBUG POP3: connecting to host "mail.bellsouth.net", port 110, isSSL false

S: +OK POP3 server ready.

C: USER ***user_id***

S: +OK please send PASS command

C: PASS ***password***

S: -ERR invalid user name or password.

C: QUIT

S: +OK ***user_id*** POP3 server signing off.

........

javax.mail.AuthenticationFailedException: invalid user name or password.

at com.sun.mail.pop3.POP3Store.protocolConnect(POP3Store.java:146)

at javax.mail.Service.connect(Service.java:275)

==========================================================================================

DEBUG: setDebug: JavaMail version 1.4ea

DEBUG: getProvider() returning javax.mail.Provider[STORE,pop3,com.sun.mail.pop3.POP3Store,Sun Microsystems, Inc]

DEBUG POP3: connecting to host "pop.gmail.com", port 995, isSSL false

S: EOF

......

javax.mail.AuthenticationFailedException: EOF on socket

at com.sun.mail.pop3.POP3Store.protocolConnect(POP3Store.java:146)

at javax.mail.Service.connect(Service.java:275)

==========================================================================================

DEBUG: setDebug: JavaMail version 1.4ea

DEBUG: getProvider() returning javax.mail.Provider[STORE,pop3,com.sun.mail.pop3.POP3Store,Sun Microsystems, Inc]

DEBUG POP3: connecting to host "mail.nmjava.com", port 110, isSSL false

S: +OK <28415.1183997013@mail54.opentransfer.com>

C: USER ***user_id***

S: +OK

C: PASS ***password***

S: -ERR authorization failed

C: QUIT

S: EOF

javax.mail.AuthenticationFailedException: authorization failed

at com.sun.mail.pop3.POP3Store.protocolConnect(POP3Store.java:146)

at javax.mail.Service.connect(Service.java:275)

==========================================================================================

I've set up all three in my ThunderBird to retrieve messages from the web accounts with the same user_ids and passwords that I used in my java method mentioned above, am I doing something wrong with the : Login_To_Incoming_Server(...) function ?

The gmail account needs SSL when sending messages.

Frank

Ni_Mina at 2007-7-21 22:53:35 >

The user_ids and passwords are just plain texts, something like : minfni

Only Gmail requires SSL to send, the other two uses non-SSL connection, I verified that from Thunderbird.

You can try my method with any of your web account, I bet it will fail even if they work with your other email clients, the Java method couldn't do it. Just don't know why, same user_ids/passwords.

Frank

Ni_Mina at 2007-7-21 22:53:35 >

Thanks for the advice. But if it is so simple and it works, why the method I use (which is a simpler version of the sample code from JavaMail) doesn't work ? Can you see anything wrong with it ? It seems the only weak point is user_id/password info, but I've checked that, exactly the same and no special chars in them. Isn't it strange ?!

Frank

Ni_Mina at 2007-7-21 22:53:35 >

Feel good to hear that, you tried my method and it works for you ? Hard to believe, but I'll take your word for it. I couldn't find anything wrong with it either. I tried to login with both user_name and full email address as user_id.

I need to spend more time looking into it. For Gmail I know it requires SSL to send email, does that automatically mean I also need to use SSL when I get messages through its POP3 ?

Thanks

Frank

Ni_Mina at 2007-7-21 22:53:40 >

Something strange happened. I modified the msgshow.java program, ran by itself and it logged into my ISP's POP3 server, but when I called it from another java program with the same parameters, it couldn't log in, the modified program looks like this :

===========================================================

import java.util.*;

import java.io.*;

import javax.mail.*;

import javax.mail.event.*;

import javax.mail.internet.*;

import javax.activation.*;

public class Show_Email_Message

{

static String protocol,host=null,user=null,password=null,mbox=null,url=null,indentStr="";

static int port=-1,attnum=1,msgnum=-1,level=0;

static boolean verbose=false,debug=false,showStructure=false,showMessage=false,showAlert=false,saveAttachments=false;

static InputStream msgStream=System.in;

/*

Yahoo Mail: Incoming Mail Server - pop.mail.yahoo.com (POP3 - port 110)

Outgoing Mail Server - smtp.mail.yahoo.com (SMPTP - port 25)

Google GMail : Incoming Mail Server - pop.gmail.com (POP3S SSL enabled, port 995)

Outgoing Mail Server - gmail.com (SMPTS SSL enabled, port 465)

*/

public static boolean Login_To_Incoming_Server(String protocol,String host,int port,String user,String password,boolean verbose,boolean debug,String url)

{

Out("protocol="+protocol);

Out("host="+host);

Out("port="+port);

Out("user="+user);

Out("password="+password);

Out("verbose="+verbose);

Out("debug="+debug);

Out("url="+url);

return Show_Message(protocol,host,port,user,password,verbose,debug,url,mbox,showStructure,saveAttachments,showMessage,showAlert,0);

}

public static boolean Show_Message(String protocol,String host,int port,String user,String password,boolean verbose,boolean debug,String url,String mbox,boolean showStructure,boolean saveAttachments,boolean showMessage,boolean showAlert,int msgnum)

{

try

{

Properties props=System.getProperties(); // Get a Properties object

Session session=Session.getInstance(props,null);// Get a Session object

session.setDebug(debug);

if (showMessage)

{

MimeMessage msg;

if (mbox != null) msg=new MimeMessage(session,new BufferedInputStream(new FileInputStream(mbox)));

else msg=new MimeMessage(session,msgStream);

dumpPart(msg);

return true;

}

Store store=null;// Get a Store object

if (url != null)

{

URLName urln=new URLName(url);

store=session.getStore(urln);

if (showAlert)

{

store.addStoreListener(new StoreListener()

{

public void notification(StoreEvent e)

{

String s;

if (e.getMessageType() == StoreEvent.ALERT) s="ALERT: ";

else s="NOTICE: ";

System.out.println(s + e.getMessage());

}

});

}

store.connect();

}

else

{

if (protocol != null) store=session.getStore(protocol);

else store=session.getStore();

// Connect

if (host != null || user != null || password != null) store.connect(host, port, user, password);

else store.connect();

}

if (msgnum==0) return true;

Folder folder=store.getDefaultFolder(); // Open the Folder

if (folder == null)

{

System.out.println("No default folder");

return false;

}

if (mbox == null) mbox="INBOX";

folder=folder.getFolder(mbox);

if (folder == null)

{

System.out.println("Invalid folder");

return false;

}

try { folder.open(Folder.READ_WRITE); } // try to open read/write and if that fails try read-only

catch (MessagingException ex) { folder.open(Folder.READ_ONLY); }

int totalMessages=folder.getMessageCount();

if (totalMessages == 0)

{

System.out.println("Empty folder");

folder.close(false);

store.close();

return true;

}

if (verbose)

{

int newMessages=folder.getNewMessageCount();

System.out.println("Total messages=" + totalMessages);

System.out.println("New messages=" + newMessages);

System.out.println("-");

}

if (msgnum == -1)

{

Message[] msgs=folder.getMessages();// Attributes & Flags for all messages ..

FetchProfile fp=new FetchProfile();// Use a suitable FetchProfile

fp.add(FetchProfile.Item.ENVELOPE);

fp.add(FetchProfile.Item.FLAGS);

fp.add("X-Mailer");

folder.fetch(msgs, fp);

for (int i=0; i < msgs.length; i++)

{

System.out.println("--");

System.out.println("MESSAGE #" + (i + 1) + ":");

dumpEnvelope(msgs[i]);

// dumpPart(msgs[i]);

}

}

else

{

System.out.println("Getting message number: " + msgnum);

Message m=null;

try

{

m=folder.getMessage(msgnum);

dumpPart(m);

}

catch (IndexOutOfBoundsException iex) { System.out.println("Message number out of range"); }

}

folder.close(false);

store.close();

}

catch (Exception ex)

{

System.out.println("Oops, got exception! " + ex.getMessage());

ex.printStackTrace();

return false;

}

return true;

}

public static void out(String message) { System.out.print(message); }

public static void Out(String message) { System.out.println(message); }

public static void main(String argv[])

{

int optind;

for (optind=0; optind < argv.length; optind++)

{

if (argv[optind].equals("-T")) protocol=argv[++optind];

else if (argv[optind].equals("-H")) host=argv[++optind];

else if (argv[optind].equals("-U")) user=argv[++optind];

else if (argv[optind].equals("-P")) password=argv[++optind];

else if (argv[optind].equals("-v")) verbose=true;

else if (argv[optind].equals("-D")) debug=true;

else if (argv[optind].equals("-f")) mbox=argv[++optind];

else if (argv[optind].equals("-L")) url=argv[++optind];

else if (argv[optind].equals("-p")) port=Integer.parseInt(argv[++optind]);

else if (argv[optind].equals("-s")) showStructure=true;

else if (argv[optind].equals("-S")) saveAttachments=true;

else if (argv[optind].equals("-m")) showMessage=true;

else if (argv[optind].equals("-a")) showAlert=true;

else if (argv[optind].equals("--"))

{

optind++;

break;

}

else if (argv[optind].startsWith("-"))

{

Out(" ? optind="+optind+" "+argv[optind]);

System.out.println("Usage: msgshow [-L url] [-T protocol] [-H host] [-p port] [-U user]");

System.out.println("\t[-P password] [-f mailbox] [msgnum] [-v] [-D] [-s] [-S] [-a]");

System.out.println("ormsgshow -m [-v] [-D] [-s] [-S] [-f msg-file]");

System.exit(1);

}

else break;

}

try

{

if (optind < argv.length) msgnum=Integer.parseInt(argv[optind]);

Show_Email_Message demo=new Show_Email_Message();

//Show_Message(String protocol,String host,int port,String user,String password,boolean verbose,boolean debug,String url,String mbox,boolean showStructure,boolean saveAttachments,boolean showMessage,boolean showAlert,int msgnum)

//Out("Show_Message = "+demo.Show_Message("pop3","mail.nmjava.com",110,"webmaster@nmjava.com","webmaster",true,true,null,null,false,false,false,false,msgnum));

//Login_To_Incoming_Server(String protocol,String host,int port,String user,String password,boolean verbose,boolean debug,String url)

Out("Login_To_Incoming_Server = "+demo.Login_To_Incoming_Server("pop3","mail.nmjava.com",110,"webmaster@nmjava.com","webmaster",true,true,null));

}

catch (Exception ex)

{

System.out.println("Oops, got exception! " + ex.getMessage());

ex.printStackTrace();

System.exit(1);

}

}

public static void dumpPart(Part p) throws Exception

{

if (p instanceof Message) dumpEnvelope((Message)p);

/** Dump input stream ..

InputStream is=p.getInputStream();

// If "is" is not already buffered, wrap a BufferedInputStream around it.

if (!(is instanceof BufferedInputStream)) is=new BufferedInputStream(is);

int c;

while ((c=is.read()) != -1) System.out.write(c);

**/

String ct=p.getContentType();

try { pr("CONTENT-TYPE: " + (new ContentType(ct)).toString()); }

catch (ParseException pex) { pr("BAD CONTENT-TYPE: " + ct); }

String filename=p.getFileName();

if (filename != null) pr("FILENAME: " + filename);

if (p.isMimeType("text/plain"))// Using isMimeType to determine the content type avoids fetching the actual content data until we need it.

{

pr("This is plain text");

pr("");

if (!showStructure && !saveAttachments) System.out.println((String)p.getContent());

}

else if (p.isMimeType("multipart/*"))

{

pr("This is a Multipart");

pr("");

Multipart mp=(Multipart)p.getContent();

level++;

int count=mp.getCount();

for (int i=0; i < count; i++) dumpPart(mp.getBodyPart(i));

level--;

}

else if (p.isMimeType("message/rfc822"))

{

pr("This is a Nested Message");

pr("");

level++;

dumpPart((Part)p.getContent());

level--;

}

else

{

if (!showStructure && !saveAttachments)

{

// If we actually want to see the data, and it's not a MIME type we know, fetch it and check its Java type.

Object o=p.getContent();

if (o instanceof String)

{

pr("This is a string");

pr("");

System.out.println((String)o);

}

else if (o instanceof InputStream)

{

pr("This is just an input stream");

pr("");

InputStream is=(InputStream)o;

int c;

while ((c=is.read()) != -1) System.out.write(c);

}

else

{

pr("This is an unknown type");

pr("");

pr(o.toString());

}

}

else pr("");// just a separator

}

// If we're saving attachments, write out anything that looks like an attachment into an appropriately named file. Don't overwrite existing files to prevent mistakes.

if (saveAttachments && level != 0 && !p.isMimeType("multipart/*"))

{

String disp=p.getDisposition();

if (disp == null || disp.equalsIgnoreCase(Part.ATTACHMENT)) // many mailers don't include a Content-Disposition

{

if (filename == null) filename="Attachment" + attnum++;

pr("Saving attachment to file " + filename);

try

{

File f=new File(filename);

if (f.exists()) throw new IOException("file exists");// XXX - could try a series of names

((MimeBodyPart)p).saveFile(f);

}

catch (IOException ex) { pr("Failed to save attachment: " + ex); }

pr("");

}

}

}

public static void dumpEnvelope(Message m) throws Exception

{

pr("This is the message envelope");

pr("");

Address[] a;

// FROM

if ((a=m.getFrom()) != null) for (int j=0; j < a.length; j++) pr("FROM: " + a[j].toString());

// TO

if ((a=m.getRecipients(Message.RecipientType.TO)) != null)

{

for (int j=0; j < a.length; j++)

{

pr("TO: " + a[j].toString());

InternetAddress ia=(InternetAddress)a[j];

if (ia.isGroup())

{

InternetAddress[] aa=ia.getGroup(false);

for (int k=0; k < aa.length; k++) pr(" GROUP: " + aa[k].toString());

}

}

}

// SUBJECT

pr("SUBJECT: " + m.getSubject());

// DATE

Date d=m.getSentDate();

pr("SendDate: "+(d != null ? d.toString():"UNKNOWN"));

// FLAGS

Flags flags=m.getFlags();

StringBuffer sb=new StringBuffer();

Flags.Flag[] sf=flags.getSystemFlags();// get the system flags

boolean first=true;

for (int i=0; i < sf.length; i++)

{

String s;

Flags.Flag f=sf[i];

if (f == Flags.Flag.ANSWERED) s="\\Answered";

else if (f == Flags.Flag.DELETED) s="\\Deleted";

else if (f == Flags.Flag.DRAFT) s="\\Draft";

else if (f == Flags.Flag.FLAGGED) s="\\Flagged";

else if (f == Flags.Flag.RECENT) s="\\Recent";

else if (f == Flags.Flag.SEEN) s="\\Seen";

else continue; // skip it

if (first) first=false;

else sb.append(' ');

sb.append(s);

}

String[] uf=flags.getUserFlags();// get the user flag strings

for (int i=0; i < uf.length; i++)

{

if (first) first=false;

else sb.append(' ');

sb.append(uf[i]);

}

pr("FLAGS: " + sb.toString());

// X-MAILER

String[] hdrs=m.getHeader("X-Mailer");

if (hdrs != null) pr("X-Mailer: " + hdrs[0]);

else pr("X-Mailer NOT available");

}

// Print a, possibly indented, string.

public static void pr(String s)

{

if (showStructure) System.out.print(indentStr.substring(0, level * 2));

System.out.println(s);

}

}

===========================================================

Here are the results :

--

<1> Ran by it self [ Started from main() ]

init:

deps-jar:

compile-single:

run-single:

protocol=pop3

host=mail.nmjava.com

port=110

user=webmaster@nmjava.com

password=[***password***]

verbose=true

debug=true

url=null

DEBUG: setDebug: JavaMail version 1.4ea

DEBUG: getProvider() returning javax.mail.Provider[STORE,pop3,com.sun.mail.pop3.POP3Store,Sun Microsystems, Inc]

DEBUG POP3: connecting to host "mail.nmjava.com", port 110, isSSL false

S: +OK <13577.1184958019@mail54.opentransfer.com>

C: USER webmaster@nmjava.com

S: +OK

C: PASS [***password***]

S: +OK

Login_To_Incoming_Server = true

BUILD SUCCESSFUL (total time: 2 seconds)

--

<2> Called from another Java program [ Started by calling : Show_Email_Message.Login_To_Incoming_Server(Incoming_Server_Protocol,Incoming_Server_Host_Name,Integer.parseInt(Incoming_Server_Port_Number),User_Name+"@"+Incoming_Server_Host_Name.substring(Incoming_Server_Host_Name.indexOf(".")+1),Password,true,true,null) ]

init:

deps-jar:

compile-single:

run-single:

protocol=pop3

host=mail.nmjava.com

port=110

user=webmaster@nmjava.com

password=[***password***]

verbose=true

debug=true

url=null

DEBUG: setDebug: JavaMail version 1.4ea

DEBUG: getProvider() returning javax.mail.Provider[STORE,pop3,com.sun.mail.pop3.POP3Store,Sun Microsystems, Inc]

DEBUG POP3: connecting to host "mail.nmjava.com", port 110, isSSL false

S: +OK <8609.1184959318@mail54.opentransfer.com>

C: USER webmaster@nmjava.com

S: +OK

C: PASS [***password***]

S: -ERR authorization failed

C: QUIT

S: EOF

javax.mail.AuthenticationFailedException: authorization failed

at com.sun.mail.pop3.POP3Store.protocolConnect(POP3Store.java:146)

Oops, got exception! authorization failed

Login_To_Incoming_Server = false

at javax.mail.Service.connect(Service.java:275)

at Show_Email_Message.Show_Message(Show_Email_Message.java:78)

at Show_Email_Message.Login_To_Incoming_Server(Show_Email_Message.java:32)

at Email_Panel.Check_Email_Host_Availability(Email_Panel.java:1066)

at Email_Panel.run(Email_Panel.java:1565)

at java.lang.Thread.run(Thread.java:619)

===========================================================

The parameters were the same, why the difference in results ? Thanks.

Frank

Ni_Mina at 2007-7-21 22:53:40 >