Sorry, that my information sounded as if I had a _big_
problem with this internal message ;-) Thanks for your
answers.


RHB> The only way I can think of at the moment that SA would see
RHB> this message is if the entire raw mailbox is fed through SA.

Yes, this is what I am doing.


RHB> For example, one could add a test for this
RHB> particular message and bias the score towards a positive non-spam value.

Right.

RHB> >Then I've seen that there are some mailers which are treated as
RHB> "brave"
RHB> >mailers by Spam Assassin. I think Mahogany is not among them. See
RHB> >file 20_anti_ratware.cf.
RHB> 
RHB> Here is a link to the SA configuration file:
RHB>      <http://www.spamassassin.org/dist/rules/20_ratware.cf>
RHB> 
RHB> I thought this file only specified tests for either (A) mailers that
RHB> were 
RHB> commonly used as the MUA for spammers, or (B) forged mailer headers
RHB> that 
RHB> were commonly found on spams?

Yes, but there will be installed another file which keeps information
about mailers which are commonly NOT used by spammers (see below). Maybe
Mahogany should be listed as another "non-spam mailer" ...


Roland

----------------------------------- SNIP --------------------------------

# SpamAssassin rules file: known non-spam mailers ("ratware")
#
# Please don't modify this file as your changes will be overwritten with
# the next update. Use /etc/mail/spamassassin/local.cf instead.
# See 'perldoc Mail::SpamAssassin::Conf' for details.
#
###########################################################################

header USER_AGENT_PINE                Message-Id =~ /^<Pine\.[A-Z]{3}\.\d\.[0-9A-Z]+\./
describe USER_AGENT_PINE        Message-Id indicates a non-spam MUA (Pine)

header USER_AGENT_MUTT                User-Agent =~ /^Mutt\/\d(?:\.\d+){1,4}/
describe USER_AGENT_MUTT        User-Agent header indicates a non-spam MUA (Mutt)


header USER_AGENT_MOZILLA_UA        User-Agent =~ /^Mozilla\/5\.\d+ \(.*\) 
Gecko\/\d{8}(?: |$)/
describe USER_AGENT_MOZILLA_UA        User-Agent header indicates a non-spam MUA 
(Mozilla)
header USER_AGENT_MOZILLA_XM        X-Mailer   =~ /^Mozilla 4\.\d{2} \[[a-z]{2}\]/
describe USER_AGENT_MOZILLA_XM        X-Mailer header indicates a non-spam MUA 
(Netscape)

header USER_AGENT_MACOE                User-Agent =~ /^Microsoft[ -]Outlook[ 
-]Express[ -]Macintosh[ -]Edition/
describe USER_AGENT_MACOE        User-Agent header indicates a non-spam MUA (Outlook 
Express)
header USER_AGENT_OUTLOOK        X-Mailer   =~ /^Microsoft Outlook [A-Z]{3}, Build 
[89]\.0\.[1-3]\d{3} \([89]\.0\.[1-3]\d{3}\.0\)$/
describe USER_AGENT_OUTLOOK        X-Mailer header indicates a non-spam MUA (Outlook)
header USER_AGENT_ENTOURAGE        User-Agent =~ 
/^Microsoft-Entourage\/\d{1,2}(?:\.\d){1,2}\.\d{4}$/
describe USER_AGENT_ENTOURAGE        User-Agent header indicates a non-spam MUA 
(Entourage)

header USER_AGENT_KMAIL                User-Agent =~ /^KMail\/1\.\d\.\d+$/
describe USER_AGENT_KMAIL        User-Agent header indicates a non-spam MUA (KMail)

header USER_AGENT_IMP                User-Agent =~ /^Internet Messaging Program 
\(IMP\) [34]\.\d/
describe USER_AGENT_IMP                User-Agent header indicates a non-spam MUA (IMP)


header USER_AGENT_TONLINE        X-Mailer   =~ /^T-Online (?:e|Web)Mail \d\.\d+$/
describe USER_AGENT_TONLINE        X-Mailer header indicates a non-spam MUA (T-Offline)

header USER_AGENT_APPLEMAIL        X-Mailer   =~ /^Apple Mail \(\d\.\d+\)$/
describe USER_AGENT_APPLEMAIL        X-Mailer header indicates a non-spam MUA (Apple 
Mail)


header USER_AGENT_GNUS_UA        User-Agent =~ /^Gnus\/\d\.\d+ /
describe USER_AGENT_GNUS_UA        User-Agent header indicates a non-spam MUA (Gnus)
header USER_AGENT_GNUS_XM        X-Mailer   =~ /^Gnus v\d(?:\.\d+){1,2}\/X?Emacs 
\d+\.\d+/
describe USER_AGENT_GNUS_XM        X-Mailer header indicates a non-spam MUA (Gnus)


tflags USER_AGENT_PINE       nice
tflags USER_AGENT_MUTT       nice
tflags USER_AGENT_MOZILLA_UA nice
tflags USER_AGENT_MOZILLA_XM nice
tflags USER_AGENT_MACOE      nice
tflags USER_AGENT_OUTLOOK    nice
tflags USER_AGENT_ENTOURAGE  nice
tflags USER_AGENT_KMAIL      nice
tflags USER_AGENT_IMP        nice
tflags USER_AGENT_TONLINE    nice
tflags USER_AGENT_APPLEMAIL  nice
tflags USER_AGENT_GNUS_UA    nice
tflags USER_AGENT_GNUS_XM    nice


header USER_AGENT_THEBAT       X-Mailer   =~ /^The Bat! \(v1\.\d{2}[a-z )]/
describe USER_AGENT_THEBAT     X-Mailer header indicates a non-spam MUA (The Bat!)
tflags USER_AGENT_THEBAT nice

header USER_AGENT_AOL           X-Mailer   =~ /^AOL (?:[5-7]\.0 )?for (?:Win|Mac).* 
sub \d+$/
describe USER_AGENT_AOL         X-Mailer header indicates a non-spam MUA (AOL)
tflags USER_AGENT_AOL        nice


header USER_AGENT_OE           X-Mailer   =~ /^Microsoft Outlook Express 
[4-6]\.\d{2}\.\d{4}\.\d{1,4}$/
describe USER_AGENT_OE         X-Mailer header indicates a non-spam MUA (Outlook 
Express)
tflags USER_AGENT_OE nice      

----------------------------------------------------------------------------------




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