mirror of
https://github.com/mail-in-a-box/mailinabox.git
synced 2024-12-22 07:17:05 +00:00
72 lines
2.7 KiB
Bash
72 lines
2.7 KiB
Bash
# Spam filtering with spamassassin via spampd
|
|
#############################################
|
|
|
|
# spampd sits between postfix and dovecot. It takes mail from postfix
|
|
# over the LMTP protocol, runs spamassassin on it, and then passes the
|
|
# message over LMTP to dovecot for local delivery.
|
|
|
|
# In order to move spam automatically into the Spam folder we use the dovecot sieve
|
|
# plugin. The tools/mail.py tool creates the necessary sieve script for each mail
|
|
# user when the mail user is created.
|
|
|
|
source setup/functions.sh # load our functions
|
|
|
|
# Install packages.
|
|
apt_install spampd razor pyzor dovecot-sieve dovecot-antispam
|
|
|
|
# Allow spamassassin to download new rules.
|
|
tools/editconf.py /etc/default/spamassassin \
|
|
CRON=1
|
|
|
|
# Configure pyzor.
|
|
pyzor discover
|
|
|
|
# Hook into postfix. Replace dovecot with spampd as the mail delivery agent.
|
|
tools/editconf.py /etc/postfix/main.cf virtual_transport=lmtp:[127.0.0.1]:10025
|
|
|
|
# Pass messages on to docevot on port 10026.
|
|
# This is actually the default setting but we don't want to lose track of it.
|
|
# We've already configured Dovecot to listen on this port.
|
|
tools/editconf.py /etc/default/spampd DESTPORT=10026
|
|
|
|
# Enable the Dovecot sieve plugin which let's us set a script that automatically moves
|
|
# spam into the user's Spam mail filter.
|
|
# (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
|
|
|
|
# Enable the Dovecot antispam plugin to detect when a message moves between folders so we can
|
|
# pass it to sa-learn for training. (Be careful if we use multiple plugins later.)
|
|
sudo sed -i "s/#mail_plugins = .*/mail_plugins = \$mail_plugins antispam/" /etc/dovecot/conf.d/20-imap.conf
|
|
|
|
# When mail is moved in or out of the Dovecot Spam folder, re-train using this script
|
|
# that sends the mail to spamassassin.
|
|
# from http://wiki2.dovecot.org/Plugins/Antispam
|
|
cat > /usr/bin/sa-learn-pipe.sh << EOF;
|
|
cat<&0 >> /tmp/sendmail-msg-\$\$.txt
|
|
/usr/bin/sa-learn \$* /tmp/sendmail-msg-\$\$.txt > /dev/null
|
|
rm -f /tmp/sendmail-msg-\$\$.txt
|
|
exit 0
|
|
EOF
|
|
chmod a+x /usr/bin/sa-learn-pipe.sh
|
|
|
|
# Configure the antispam plugin to call sa-learn-pipe.sh.
|
|
cat > /etc/dovecot/conf.d/99-local-spampd.conf << EOF;
|
|
plugin {
|
|
antispam_backend = pipe
|
|
antispam_spam_pattern_ignorecase = SPAM
|
|
antispam_allow_append_to_spam = yes
|
|
antispam_pipe_program_spam_args = /usr/bin/sa-learn-pipe.sh;--spam
|
|
antispam_pipe_program_notspam_args = /usr/bin/sa-learn-pipe.sh;--ham
|
|
antispam_pipe_program = /bin/bash
|
|
}
|
|
EOF
|
|
|
|
# Initial training?
|
|
# sa-learn --ham storage/mail/mailboxes/*/*/cur/
|
|
# sa-learn --spam storage/mail/mailboxes/*/*/.Spam/cur/
|
|
|
|
# Kick services.
|
|
sudo service spampd restart
|
|
sudo service dovecot restart
|
|
|