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mailinabox/notes/dspam.sh

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# Spam filtering with dspam.
#
# This mostly works. But dspam crashes. So..... we're not using this.
apt-get -q -y install dspam libdspam7-drv-sqlite3 dovecot-antispam dovecot-sieve
# Let it turn on.
sed -i "s/START=no/START=yes/" /etc/default/dspam
# Override some of the basic settings that have default values we don't like.
# Listen as an SMTP server, and pass messages back directly to dovecot.
tools/editconf.py /etc/dspam/dspam.conf -s \
Home=$STORAGE_ROOT/mail/dspam \
ServerMode=standard \
ServerHost=127.0.0.1 \
ServerParameters=--deliver=innocent \
DeliveryProto=LMTP \
DeliveryHost=/var/run/dovecot/lmtp \
Tokenizer=osb
# Put other settings into a local configuration file.
cat > /etc/dspam/dspam.d/local.conf << EOF;
IgnoreHeader X-Spam-Status
IgnoreHeader X-Spam-Scanned
IgnoreHeader X-Virus-Scanner-Result
IgnoreHeader X-Virus-Scanned
IgnoreHeader X-DKIM
IgnoreHeader DKIM-Signature
IgnoreHeader DomainKey-Signature
IgnoreHeader X-Google-Dkim-Signature
EOF
# Global preferences.
tools/editconf.py /etc/dspam/default.prefs \
spamAction=deliver \
signatureLocation=headers \
showFactors=on
# Hook into postfix. Replace dovecot with dspam as the mail delivery agent.
# dspam is configured above to pass mail on to dovecot next.
tools/editconf.py /etc/postfix/main.cf virtual_transport=lmtp:[127.0.0.1]:2424
# Hook into dovecot... these aren't tested.
# Automatically move spam into a folder called Spam. Enable the sieve plugin.
# (Note: Be careful if we want to use multiple plugins later.)
sudo sed -i "s/#mail_plugins = .*/mail_plugins = \$mail_plugins sieve/" /etc/dovecot/conf.d/20-lmtp.conf
# The sieve scripts are installed by users_update.sh.
# to detect when a message moves between folders so we can
# pass it to dspam for training. (Be careful if we use multiple plugins later.)
# This is not finished.
sudo sed -i "s/#mail_plugins = .*/mail_plugins = \$mail_plugins antispam/" /etc/dovecot/conf.d/20-imap.conf
# Create storage space.
mkdir -p $STORAGE_ROOT/mail/dspam
chown dspam:dspam $STORAGE_ROOT/mail/dspam
service dspam restart
service postfix restart