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Content Transfer Encoding 7bit PDF Download: What You Need to Know About Base64 and Quoted-Printable



If MIME with TNEF is used while encoding message content,all attachment properties and content are in the TNEF stream. The TNEF itself is a single, binary attached file named Winmail.dat, encoded as described for MIME without TNEF.


If MIME is used without TNEF, attached files are sent as MIME message content parts. The filename is placed in the name parameter to the Content-type header for the attachment. The character set for the attachment is placed in the charset parameter to the Content-type; it and the content-transfer-encoding are determined by scanning the entire attachment content. URL attachments are treated specially:




content transfer encoding 7bit pdf download



If the attachment is a URL (an attached file with extension .URL), and the access mode defined in it is anonymous FTP, it is encoded as an external message, and the content of the file (the URL) is copied into the header of the external message. Content-type: message/external-body; access-type=anon-ftp (Content-Transfer-Encoding: 7bit is assumed.)


If uuencode with TNEF is used while encoding message content, all attachment properties and content are in the TNEF stream. The TNEF itself is a single, binary attached file named Winmail.dat, encoded as described for Uuencode without TNEF.


Quoted-Printable and Base64 are the two MIME content transfer encodings, if the trivial "7bit" and "8bit" encoding are not counted. If the text to be encoded does not contain many non-ASCII characters, then Quoted-Printable results in a fairly readable[1] and compact encoded result. On the other hand, if the input has many 8-bit characters, then Quoted-Printable becomes both unreadable and extremely inefficient. Base64 is not human-readable, but has a uniform overhead for all data and is the more sensible choice for binary formats or text in a script other than the Latin script.


When you run the script now, it should be a great deal faster as there is lot less content to download. Furthermore, unless you get some particularly tricky emails through, that should handle everything. Your best bet is to go for this simple option until given reason to write something more complex.


Go to and download themanuals which are in PDF format. The Application Programming Guide andProgramming Reference's should put you on the right track.In DB2 there is a program called DSNTIAR that can decode thedifferenent SQL codes. I wonder if such exists for MQSeries?>This is a multi-part message in MIME format.>--------------CE1DD70A330A678924A9D6EE>Content-Type: text/plain; charset=us-ascii>Content-Transfer-Encoding: 7bit


Return-Path: X-Original-To: ietf-carddav@osafoundation.org Delivered-To: ietf-carddav@osafoundation.org Received: from laweleka.osafoundation.org (laweleka.osafoundation.org [204.152.186.98]) by leilani.osafoundation.org (Postfix) with ESMTP id 4C6817F67E for ; Wed, 9 May 2007 08:34:56 -0700 (PDT) Received: from localhost (laweleka.osafoundation.org [127.0.0.1]) by laweleka.osafoundation.org (Postfix) with ESMTP id 14FE8142254 for ; Wed, 9 May 2007 08:34:01 -0700 (PDT) X-Virus-Scanned: by amavisd-new and clamav at osafoundation.org X-Spam-Score: -1.143 X-Spam-Level: X-Spam-Status: No, score=-1.143 tagged_above=-50 required=4 tests=[AWL=1.455, BAYES_00=-2.599, UNPARSEABLE_RELAY=0.001] Received: from laweleka.osafoundation.org ([127.0.0.1]) by localhost (laweleka.osafoundation.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id x3S12phrGpwr for ; Wed, 9 May 2007 08:33:58 -0700 (PDT) Received: from gmp-ea-fw-1.sun.com (gmp-ea-fw-1.sun.com [192.18.1.36]) by laweleka.osafoundation.org (Postfix) with ESMTP id 6D16E142253 for ; Wed, 9 May 2007 08:33:58 -0700 (PDT) Received: from d1-emea-09.sun.com ([192.18.2.119]) by gmp-ea-fw-1.sun.com (8.13.6+Sun/8.12.9) with ESMTP id l49FXvIn010126 for ; Wed, 9 May 2007 15:33:57 GMT Received: from conversion-daemon.d1-emea-09.sun.com by d1-emea-09.sun.com (Sun Java System Messaging Server 6.2-6.01 (built Apr 3 2006)) id (original mail from Arnaud.Quillaud@Sun.COM) for ietf-carddav@osafoundation.org; Wed, 09 May 2007 16:33:56 +0100 (BST) Received: from KONE-JHY8LIXZ2A.Sun.COM ([129.150.116.246]) by d1-emea-09.sun.com (Sun Java System Messaging Server 6.2-6.01 (built Apr 3 2006)) with ESMTPSA id for ietf-carddav@osafoundation.org; Wed, 09 May 2007 16:33:56 +0100 (BST) Content-return: prohibited Date: Wed, 09 May 2007 17:34:12 +0200 From: Arnaud Quillaud Sender: Arnaud.Quillaud@Sun.COM To: ietf-carddav@osafoundation.org Message-id: MIME-version: 1.0 X-Mailer: Sun Outlook Connector 7.2.310.1 Content-type: TEXT/PLAIN; CHARSET="ISO-8859-1" Content-transfer-encoding: 7bit Subject: [Ietf-carddav] sorting, grouping, paging in CardDAV X-BeenThere: ietf-carddav@osafoundation.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: ietf-carddav.osafoundation.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 May 2007 15:34:56 -0000


A response of 302 (moved temporarily) makes gecko follow to the redirect url and do a fetch() HEAD on the nonexistent file url, which returns a fail. So the Open won't happen. And I used HEAD to just check and not download anything, which by spec should return the same things as GET without the content. As per above, a check could be added to reject successful redirect fetch() to an existing file from http origin.


Disables encoding of leading 'F', '.' and '-' character in body parts using quoted-printable content transfer encoding.These leading characters used to cause problems to legacy mail transfer agents, so quoted-printable-encoding them was usedas a workaround that doesn't cause any problems to properly-implemented mail agents.


Disable encoding of leading 'F', '.' and '-' character in body parts using quoted-printable content transfer encoding.These leading characters used to cause problems to legacy mail transfer agents, so quoted-printable-encoding them was usedas a workaround that doesn't cause any problems to properly-implemented mail agents. 2ff7e9595c


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