MIME and smtp

[DmitryNik]

Hello!

I have read some threads on this forum related to smtp and attachments and I've read rfc's related to MIME, but still I have a problem. I believe it's only because of my misunderstanding.

I tried to send the message with html-body and the picture. But as a result I can send either message or picture.
Here is the code related to the mail body:

"MIME-Version: 1.0\r\n"
                "Content-Type: multipart/mixed\r\n"
                "Received: from support@support.com\r\n"
                "Date: " + date.toString() + "\r\n"
                "From: Dude\r\n"
                "To: Dude\r\n"
                "Subject: Your PC is infected by our company\r\n"
                "Content-Type: text/html; charset=UNICODE-1-1-UTF-7\r\n"
                "<h1>Hello, dude!!!ääääää</h1>"
                "Content-Type: image/jpg; name=pic.jpg\r\n"
                "Content-Transfer-Encoding: base64\r\n" +
                str +
                "\r\n.\r\n"

"MIME-Version: 1.0\r\n"
                "Content-Type: multipart/mixed\r\n"
                "Received: from support@support.com\r\n"
                "Date: " + date.toString() + "\r\n"
                "From: Dude\r\n"
                "To: Dude\r\n"
                "Subject: Your PC is infected by our company\r\n"
                "Content-Type: text/html; charset=UNICODE-1-1-UTF-7\r\n"
                "<h1>Hello, dude!!!ääääää</h1>"
                "Content-Type: image/jpg; name=pic.jpg\r\n"
                "Content-Transfer-Encoding: base64\r\n" +
                str +
                "\r\n.\r\n"

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str is base64-encoded string.

I know about boundaries, but here is another problem: MIME didn't process them, and I saw in the message something like: --_________boundary-uniq-1;
What am I doing wrong? How it can be changed?

Thank you for answers beforehand.

[ChrisW67]

You should specify a boundary on line 2 and use it before each part of the message. Each part of the message should specify a content type, and possible other header, and a blank line (missing above) before the actual content. See http://en.wikipedia.org/wiki/MIME#Multipart_messages for a simple example.

[DmitryNik]

Thank you!

If someone has the same problem, here is the code:

"Received: from support@microsoft.com\r\n"
                "Date: " + date.toString() + "\r\n"
                "From: Dude\r\n"
                "To: Dude\r\n"
                "Subject: Your PC is infected by our company\r\n"
                "MIME-Version: 1.0\r\n"
                "Content-Type: multipart/related; boundary=_markeraaaaa\r\n"
                "\r\n"
                "--_markeraaaaa\r\n"
                "Content-Type: text/html; charset=UNICODE-1-1-UTF-7\r\n"
                "\r\n"
                "<h1>Hello, dude!!!ääääää</h1>\r\n"
                "--_markeraaaaa\r\n"
                "Content-Type: image/jpeg; name=pic.jpg\r\n"
                "Content-Transfer-Encoding: base64\r\n"
                "\r\n" +
                str + "\r\n" +
                "--_markeraaaaa--\r\n"
                "\r\n.\r\n"

"Received: from support@microsoft.com\r\n"
                "Date: " + date.toString() + "\r\n"
                "From: Dude\r\n"
                "To: Dude\r\n"
                "Subject: Your PC is infected by our company\r\n"
                "MIME-Version: 1.0\r\n"
                "Content-Type: multipart/related; boundary=_markeraaaaa\r\n"
                "\r\n"
                "--_markeraaaaa\r\n"
                "Content-Type: text/html; charset=UNICODE-1-1-UTF-7\r\n"
                "\r\n"
                "<h1>Hello, dude!!!ääääää</h1>\r\n"
                "--_markeraaaaa\r\n"
                "Content-Type: image/jpeg; name=pic.jpg\r\n"
                "Content-Transfer-Encoding: base64\r\n"
                "\r\n" +
                str + "\r\n" +
                "--_markeraaaaa--\r\n"
                "\r\n.\r\n"

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By the message, which is written above we will send one line of text and the picture. str is that picture, which was base64-encoded. For instance, in this way:

QFile file("E:\\linux-penguin-computing.jpg");
    file.open(QIODevice::ReadOnly);
    QString str = file.readAll().toBase64() + "\r\n";
    file.close();

QFile file("E:\\linux-penguin-computing.jpg");
    file.open(QIODevice::ReadOnly);
    QString str = file.readAll().toBase64() + "\r\n";
    file.close();

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