On Wed, Jul 27, 2005 at 02:38:26AM -0000, John Levine wrote:
At this point I haven't figured out what the mechanism for running
messages through the forwarding gauntlet should be. Suggestions
welcome. Paste them into a web form? Mail them in as an attachment?
My guess is that it does not make much sense to just try this and that
message, and maybe a harder one.
We need to figure out what could cause transmission and then setup a
program, which automatically generates testmessage trying to provocate
the suspected conversion.
Things I would like to see:
- White space at top, bottom, line ends of body.
- Zero bytes.
- Line ends in 0D, 0A, 0D0A
- Tabs convertet do spaces?
- Character sets: Try all bytes from 0..255 without charset,
try all charsets like iso-8859-1..15, arabic, chinese ones, etc.
and UTF-8. Try every possible character value (0..255 in most
charsets, some more in UTF-8).
- HTML: Tags up- oder downcased? canonicalized? script tags removed?
- Virus- and Spam-Mails (false positives!): Are they tagged or
modified?
- Forwarding and Bouncing by .forward and MUAs.
- Offending language: I found that especially US-made spam filter
programs are prepared to educate users and to block lists of
sexual offending or vulgar language. Are such mails modified?
regards
Hadmut
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