Read Reciept Signing & PDF's

[Julian Field]

At 12:00 04/05/2004, you wrote:
>At 11:37 04/05/2004, you wrote:
>>At 11:28 04/05/2004, you wrote:
>>> > -----Original Message-----
>>> > At 00:17 04/05/2004, you wrote:
>>> > >It would appear that read reciepts are still being signed, abeit a lot
>>> > >more gracefully, and PDF's are still being corrupted in the 4.30.3-1
>>> > >version of MailScanner.
>>> >
>>> > It should now only be signing text/html and text/plain message parts. Can
>>> > you check the MIME headers in a message that has been corrupted? If the
>>> > PDF
>>> > has been put in a text/plain, then there ain't much I can do :-(
>>>
>>>Full message source at http://www.platformhosting.com/pdf/corrupted.txt
>>
>>But having taken a look at that message, the PDF attachment has not been
>>signed at all. Only the original text and HTML inline bodies were signed,
>>the PDF file wasn't.
>
>Have you got the original message from before it went into MailScanner? Or
>can you re-create the problem? I think it's an end-of-line sequence
>problem. Fundamentally Outlook shouldn't have sent the file as
>quoted-printable in the first place.

The plot thickens. Outlook actually changes the file on its way out. It
sends it as quoted-printable, but changes the end-of-line sequence in 1 or
2 places. Most notable is after the first bit of binary header right at the
top of the file. In the original PDF file, there are a string of binary
characters ending in \r\n. The quoted-printable file output by Outlook
drops the \r leaving only \n.
If you take this file from Outlook and load it into Acrobat, it notes that
the file is damaged but is fixing it for you.
This is assuming that my understanding of quoted-printable is roughly right.
:-(
--
Julian Field
www.MailScanner.info
MailScanner thanks transtec Computers for their support

PGP footprint: EE81 D763 3DB0 0BFD E1DC 7222 11F6 5947 1415 B654

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