Created attachment 3512 [details]
Sample message

Test message sent from MS Outlook 2003 (11.8010.6568) on Windows XP w/ SP2,
pasted in the GTUBE string into the message body and expected it to work.

You will notice that the GTUBE string is not just wrapped; Outlook has in fact
replaced a character in the string (the second full stop) with a newline.

Created attachment 3513 [details]
GTUBE_OUTLOOK rule to supplement regular GTUBE test rule

As an idle thought, a separate rule for the wrecked GTUBE might make sense, as
then you can enable/disable it at your discretion without mucking with the
proper GTUBE rule.

GTUBE provides you a standard way of creating a test message that a spam filter
is supposed to treat as spam, even though it really is just a standard test
message, not really spam.

If some version of Outlook used in some particular way does not create the
proper GTUBE test message, then either figure out how to configure Outlook so it
doesn't mess up the GTUBE formatting, or see if Microsoft has an upgrade that
fixes the problem, or else use something other than Outlook to generate a GTUBE
test of your SpamAssassin installation.

SpamAssassin behaves correctly if it recognizes the GTUBE standard message,
allowing you to have a way of testing your installation. There is no reason to
recognize an almost-GTUBE message. It isn't as if spammers are using Outlook to
send GTUBE spams and SpamAssassin has to protect against them even if they get
munged en route.

Closing as WONTFIX.

Users who are Outlook victims are typically not capable of solving this sort of
problem on their own. They would expect a "standard" test case to work with
their "standard" [sic] email client. Devising a workaround for them might be a
nice gesture, and/or reduce the amount of needless problem reports caused by a
known flaw in Outlook. But it's your call, obviously.

Part of my decision here is that I don't really believe that Outlook cannot
handle a 66 character long line without destructively altering it. I don't have
Outlook to test with, but I notice that
http://support.microsoft.com/?kbid=326257 is about a problem "Your Internet
e-mail messages may not be wrapped at the number of characters that you select
in the Automatically wrap text at option in the Internet Format dialog box.
Instead, Outlook wraps the message at 72 characters."

That is longer than the GTUBE line.

I think that this really ought to be addressed at the Outlook end. I am not
adverse to someone who knows Outlook letting us know what the proper
configuration options need to be to keep it from wrapping a 68 character line so
that information can be added to documentation.