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.