Sending email issue.

jenya7

I try to send

uint32_t COMMANDS::Mail(uint32_t argc, char** args)
{
    QStringList files;

    Smtp* smtp = new Smtp("mail_from@gmail.com", "pass", "smtp.gmail.com", 465);

    smtp->sendMail("mail_from@gmail.com",  "mail_to@gmail.com" ,  "Test",  "Hello",  files);

    return MSG_OK;
}

But I get

Server response code: "535"
Server response: "535-5.7.8 Username and Password not accepted.

What user name and password it expects?

jsulm

@jenya7 How is this related to Qt?
"What user name and password it expects?" - well, from the mail account from which you want to send mails?

jenya7

@jsulm
The only relation - I use a Qt class (smtp). So may be I do something wrong.

I log with "pass" to "mail_from@gmail.com" and can send an email from it. So "mail_from@gmail.com" and "pass" seems perfectly valid to me.

jsulm

@jenya7 said in Sending email issue.:

I use a Qt class (smtp)

Smtp is not a Qt class.
From where did you get it?

jenya7

@jsulm said in Sending email issue.:

@jenya7 said in Sending email issue.:

I use a Qt class (smtp)

Smtp is not a Qt class.
From where did you get it?

I meant - implemented in Qt.

Smtp::Smtp( const QString &user, const QString &pass, const QString &host, int port, int timeout )
{    
    socket = new QSslSocket(this);

    connect(socket, SIGNAL(readyRead()), this, SLOT(readyRead()));
    connect(socket, SIGNAL(connected()), this, SLOT(connected() ) );
    connect(socket, SIGNAL(error(QAbstractSocket::SocketError)), this,SLOT(errorReceived(QAbstractSocket::SocketError)));   
    connect(socket, SIGNAL(stateChanged(QAbstractSocket::SocketState)), this, SLOT(stateChanged(QAbstractSocket::SocketState)));
    connect(socket, SIGNAL(disconnected()), this,SLOT(disconnected()));

    this->user = user;
    this->pass = pass;

    this->host = host;
    this->port = port;
    this->timeout = timeout;
}

void Smtp::sendMail(const QString &from, const QString &to, const QString &subject, const QString &body, QStringList files)
{
    message = "To: " + to + "\n";    
    message.append("From: " + from + "\n");
    message.append("Subject: " + subject + "\n");

    //Let's intitiate multipart MIME with cutting boundary "frontier"
    message.append("MIME-Version: 1.0\n");
    message.append("Content-Type: multipart/mixed; boundary=frontier\n\n");

    message.append( "--frontier\n" );
    //message.append( "Content-Type: text/html\n\n" );  //Uncomment this for HTML formating, coment the line below
    message.append( "Content-Type: text/plain\n\n" );
    message.append(body);
    message.append("\n\n");

    if(!files.isEmpty())
    {
        qDebug() << "Files to be sent: " << files.size();
        foreach(QString filePath, files)
        {
            QFile file(filePath);
            if(file.exists())
            {
                if (!file.open(QIODevice::ReadOnly))
                {
                    qDebug("Couldn't open the file");
                    QMessageBox::warning(nullptr, tr( "Qt Simple SMTP client" ), tr( "Couldn't open the file\n\n" ));
                        return ;
                }
                QByteArray bytes = file.readAll();
                message.append( "--frontier\n" );
                message.append( "Content-Type: application/octet-stream\nContent-Disposition: attachment; filename="+ QFileInfo(file.fileName()).fileName() +";\nContent-Transfer-Encoding: base64\n\n" );
                message.append(bytes.toBase64());
                message.append("\n");
            }
        }
    }
    else
        qDebug() << "No attachments found";

    message.append( "--frontier--\n" );

    message.replace( QString::fromLatin1( "\n" ), QString::fromLatin1( "\r\n" ) );
    message.replace( QString::fromLatin1( "\r\n.\r\n" ),QString::fromLatin1( "\r\n..\r\n" ) );

    this->from = from;
    rcpt = to;
    state = Init;
    socket->connectToHostEncrypted(host, static_cast<quint16>(port)); //"smtp.gmail.com" and 465 for gmail TLS
    if (!socket->waitForConnected(timeout)) {
         qDebug() << socket->errorString();
     }

    t = new QTextStream( socket );
}

jsulm

@jenya7 said in Sending email issue.:

Smtp::sendMail

It looks like you're not using user name and password when sending mails.

jenya7

@jsulm said in Sending email issue.:

@jenya7 said in Sending email issue.:

Smtp::sendMail

It looks like you're not using user name and password when sending mails.

I see. It was advised as a reliable source.

Do we have any reliable example?

jenya7

Hmm...I try this example.
The same problem. Here

// Sending command: AUTH PLAIN base64('\0' + username + '\0' + password)
 sendMessage("AUTH PLAIN " + QByteArray().append((char) 0).append(user).append((char) 0).append(password).toBase64());

// Wait for the server's response
waitForResponse();

// If the response is not 235 then the authentication was faild
 if (responseCode != 235)
 {
         emit smtpError(AuthenticationFailedError);
       return false;
 }

I get responseCode = 535.

J.Hilk

@jenya7 said in Sending email issue.:

this example

IIRC gmail, blocks IMAP ad pop3 by default, you have to log in to your gmail account and enable it in the settings

Go to "Settings", e.g. click on the "Gears" icon and select "Settings".
Click on "Forwarding and POP/IMAP".
Enable "IMAP Access" and/or "POP Download"

jenya7

@J-Hilk

This is what I have. Looks OK.

J.Hilk

@jenya7 looks good.

have you seen this SO topic about response code 535?

https://stackoverflow.com/questions/42558903/expected-response-code-250-but-got-code-535-with-message-535-5-7-8-username

You can try the solution posted there, see if that helps

jenya7

@J-Hilk
yeah, thank you. "Allow less secure apps" did the magic.