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author | Eric Wong <normalperson@yhbt.net> | 2014-01-09 23:13:37 +0000 |
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committer | Eric Wong <e@80x24.org> | 2014-01-09 22:37:54 +0000 |
commit | 3e96cf129ba5fc2834b691314c504aa363fd5cf4 (patch) | |
tree | dd5c42532049bc5dd2a420126edb9f07e9a5b9a0 /scripts/dc-dlvr | |
download | public-inbox-3e96cf129ba5fc2834b691314c504aa363fd5cf4.tar.gz |
Diffstat (limited to 'scripts/dc-dlvr')
-rwxr-xr-x | scripts/dc-dlvr | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/scripts/dc-dlvr b/scripts/dc-dlvr new file mode 100755 index 00000000..96009662 --- /dev/null +++ b/scripts/dc-dlvr @@ -0,0 +1,64 @@ +#!/bin/sh +# Copyright (C) 2008-2013, Eric Wong <e@80x24.org> +# License: GPLv3 or later +# to use with postfix main.cf: mailbox_command = /etc/dc-dlvr "$EXTENSION" +DELIVER=/usr/lib/dovecot/deliver + +# my personal preference is to use a catchall account to avoid generating +# backscatter, as invalid emails are usually spam +case $USER in +catchall) exec $DELIVER ;; +esac + +# change if your spamc/spamd listens elsewhere +spamc='spamc -U /run/spamd.sock' + +# allow plus addressing to train spam filters, $1 is the $EXTENSION +# which may be "trainspam" or "trainham". Only allow spam training +# when $CLIENT_ADDRESS is empty (local client) +case $1,$CLIENT_ADDRESS in +trainspam,) exec $spamc -L spam > /dev/null 2>&1 ;; +trainham,) exec $spamc -L ham > /dev/null 2>&1 ;; +esac + +TMPMSG=$(mktemp -t dc-dlvr.orig.$USER.XXXXXX || exit 1) +rm_list=$TMPMSG + +# pre-filter, for infrequently read lists which do their own spam filtering: +if test -r ~/.dc-dlvr.pre +then + set -e + cat > $TMPMSG + DEFAULT_INBOX=$(. ~/.dc-dlvr.pre) + if test xINBOX != x"$DEFAULT_INBOX" + then + $DELIVER -m $DEFAULT_INBOX < $TMPMSG + exec rm -f $rm_list + fi + PREMSG=$(mktemp -t dc-dlvr.orig.$USER.XXXXXX || exit 1) + rm_list="$rm_list $PREMSG" + set +e + mv -f $TMPMSG $PREMSG + $spamc -E --headers < $PREMSG > $TMPMSG +else + $spamc -E --headers > $TMPMSG +fi +err=$? + +# normal delivery +set -e + +case $err in +1) $DELIVER -m INBOX.spam < $TMPMSG ;; +*) + # users may override normal delivery and have it go elsewhere + if test -r ~/.dc-dlvr.rc + then + . ~/.dc-dlvr.rc + else + $DELIVER -m INBOX < $TMPMSG + fi + ;; +esac + +exec rm -f $rm_list |