[gentoo-user] OT - spamassassin not rewriting subject headers

[Michael Sullivan]

I'm having a problem.  I'm running spamassassin with exim:

baby ~ # emerge -pv exim spamassassin

These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild   R   ] mail-mta/exim-4.67  USE="exiscan exiscan-acl ldap mysql
pam perl sasl ssl syslog tcpd -X -dnsdb -domainkeys -dovecot-sasl
-gnutls -ipv6 -lmtp -mailwrapper -mbox -mbx -nis -postgres -radius -spf
-sqlite -srs" 0 kB 
[ebuild   R   ] mail-filter/spamassassin-3.1.8-r1  USE="berkdb doc mysql
ssl -ipv6 -ldap -postgres -qmail -sqlite -tools" 980 kB 

and I've finally gotten spamassassin to add X-Spam headers to potential
spammish emails, but it's not rewriting the Subject header.  Here's the
ACL from /etc/exim/exim.conf:

acl_check_data:

  # Deny if the message contains a virus. Before enabling this check,
you
  # must install a virus scanner and set the av_scanner option above.
  #
#  deny    malware    = *
#          message    = This message contains a virus ($malware_name).

  # Add headers to a message if it is judged to be spam. Before enabling
this,
  # you must install SpamAssassin. You may also need to set the
spamd_address
  # option above.
  #

  warn    spam       = nobody
  add_header = X-Spam_score: $spam_score\n\
  X-Spam_score_int: $spam_score_int\n\
  X-Spam_bar: $spam_bar\n\
  X-Spam_report: $spam_report

  # Accept the message.

accept


Here's my /etc/mail/spamassassin/local.cf:

baby ~ # cat /etc/mail/spamassassin/local.cf
# This is the right place to customize your installation of
SpamAssassin.
#
# See 'perldoc Mail::SpamAssassin::Conf' for details of what can be
# tweaked.
#
# Only a small subset of options are listed below
#
###########################################################################

#   Add *****SPAM***** to the Subject header of spam e-mails
#
rewrite_header Subject *****SPAM*****


#   Save spam messages as a message/rfc822 MIME attachment instead of
#   modifying the original message (0: off, 2: use text/plain instead)
#
report_safe 0


#   Set which networks or hosts are considered 'trusted' by your mail
#   server (i.e. not spammers)
#
#trusted_networks 70.234.122.


#   Set file-locking method (flock is not safe over NFS, but is faster)
#
lock_method flock


#   Set the threshold at which a message is considered spam (default:
5.0)
#
required_score 5.0


#   Use Bayesian classifier (default: 1)
#
use_bayes 1


#   Bayesian classifier auto-learning (default: 1)
#
bayes_auto_learn 1


#   Set headers which may provide inappropriate cues to the Bayesian
#   classifier
#
# bayes_ignore_header X-Bogosity
# bayes_ignore_header X-Spam-Flag
# bayes_ignore_header X-Spam-Status
#
#
header CITIBANK Body =~ /Citi/
score -100

header YAHOOGROUPS Reply-To =~ /yahoogroups.com/
score -100

So why isn't it rewriting the Subject header?

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