I have successfully setup hmailserver in a lab environment. I can connect using Outlook and can send and receive emails. The problem I am having is that when I connect with a simple Java program using javamail, the INBOX count is always zero regardless of which user I connect with. There are definitely messages in the inbox - I can see them when using my Outlook client. Any help would be greatly appreciated. Code and debug is here:

import java.util.*;
import javax.mail.*;
import javax.mail.event.*;
import javax.mail.internet.*;
import javax.activation.*;

String host = "mydomain.com";
String user = "test_user";
String from = "test_user@mydomain.com";
String password = "test_user";
String protocol = "pop3";
int port = -1;

Properties props = System.getProperties();
props.setProperty("mail.host", host);
props.setProperty("mail.user", user);
props.setProperty("mail.from", user);
props.setProperty("mail.debug", "true");

Session session = Session.getInstance(props, null);
Store store = session.getStore(protocol);

println((store.isConnected())?"Already Connected":"Not Already Connected");

store.connect(host, port, user, password);

Folder inbox = store.getFolder("INBOX");
println("folder>>>" + inbox.getFullName() + "<<<");
println("folder URLName>>>" + inbox.getURLName() + "<<<");
println((inbox.exists()?"folder exists":"folder does not exist"));

int folderType = inbox.getType();
println("folder type>>>" + folderType + "<<<");

inbox.open(Folder.READ_WRITE);
println("Message Count:" + inbox.getMessageCount());

Message[] m = inbox.getMessages();

for (int x = 0; x < m.length; x++) {
println(m[x].getSubject());
}

inbox.close(false);
store.close();


DEBUG info:


C:\groovy\working>run readmail
DEBUG: JavaMail version 1.4.3
DEBUG: successfully loaded resource: /META-INF/javamail.default.providers
DEBUG: Tables of loaded providers
DEBUG: Providers Listed By Class Name: {com.sun.mail.smtp.SMTPSSLTransport=javax
.mail.Provider[TRANSPORT,smtps,com.sun.mail.smtp.SMTPSSLTransport,Sun Microsyste
ms, Inc], com.sun.mail.smtp.SMTPTransport=javax.mail.Provider[TRANSPORT,smtp,com
.sun.mail.smtp.SMTPTransport,Sun Microsystems, Inc], com.sun.mail.imap.IMAPSSLSt
ore=javax.mail.Provider[STORE,imaps,com.sun.mail.imap.IMAPSSLStore,Sun Microsyst
ems, Inc], com.sun.mail.pop3.POP3SSLStore=javax.mail.Provider[STORE,pop3s,com.su
n.mail.pop3.POP3SSLStore,Sun Microsystems, Inc], com.sun.mail.imap.IMAPStore=jav
ax.mail.Provider[STORE,imap,com.sun.mail.imap.IMAPStore,Sun Microsystems, Inc],
com.sun.mail.pop3.POP3Store=javax.mail.Provider[STORE,pop3,com.sun.mail.pop3.POP
3Store,Sun Microsystems, Inc]}
DEBUG: Providers Listed By Protocol: {imaps=javax.mail.Provider[STORE,imaps,com.
sun.mail.imap.IMAPSSLStore,Sun Microsystems, Inc], imap=javax.mail.Provider[STOR
E,imap,com.sun.mail.imap.IMAPStore,Sun Microsystems, Inc], smtps=javax.mail.Prov
ider[TRANSPORT,smtps,com.sun.mail.smtp.SMTPSSLTransport,Sun Microsystems, Inc],
pop3=javax.mail.Provider[STORE,pop3,com.sun.mail.pop3.POP3Store,Sun Microsystems
, Inc], pop3s=javax.mail.Provider[STORE,pop3s,com.sun.mail.pop3.POP3SSLStore,Sun
Microsystems, Inc], smtp=javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.smtp.S
MTPTransport,Sun Microsystems, Inc]}
DEBUG: successfully loaded resource: /META-INF/javamail.default.address.map
DEBUG: getProvider() returning javax.mail.Provider[STORE,pop3,com.sun.mail.pop3.
POP3Store,Sun Microsystems, Inc]
Not Already Connected
DEBUG POP3: connecting to host "smashbiz.com", port 110, isSSL false
S: +OK Welcome to pop3.smashbiz.com
C: CAPA
S: -ERR Invalid command in current state.
C: USER test_user
S: +OK Send your password
C: PASS test_user
S: +OK Mailbox locked and ready
folder>>>INBOX<<<
folder URLName>>>pop3://testuser@mydomain.com/INBOX<<<
folder exists
folder type>>>1<<<
C: STAT
S: +OK 0 0
Message Count:0
C: NOOP
S: +OK
C: QUIT
S: +OK POP3 server saying goodbye...

As hMail is working correctly, I suggest you contact javamail support to find out what's wrong with it.

I am chasing it from the javamail side as well, however, I was hoping to find someone on this forum that has experience with javamail and hmailserver.

Here is what I suggest you do then to maybe see what's going on yourself.

Enable SMTP and POP3 logging.

Send an email to testuser@mydomain.com from thunderbird / outlook and collect it again via pop3 with thunderbird / outlook.

Next send another email to testuser@mydomain.com with thunderbird / outlook then close the mail client.

Run your java app.

Compare the two log sessions and see what javamail did differently.