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Add postscreen_dnsbl_reply_map to avoid disclosure of DQS key with Spamhaus setup

9f39af46

Christian Hailer <[email protected]> 3 years ago

data/Dockerfiles/postfix/postfix.sh | 11 +++++++++++
 1 file changed, 11 insertions(+)

Diff

diff --git a/data/Dockerfiles/postfix/postfix.sh b/data/Dockerfiles/postfix/postfix.sh
index fb408ce9..8099301a 100755
--- a/data/Dockerfiles/postfix/postfix.sh
+++ b/data/Dockerfiles/postfix/postfix.sh
@@ -405,6 +405,17 @@ if [ -n "$SPAMHAUS_DQS_KEY" ]; then
   ${SPAMHAUS_DQS_KEY}.zen.dq.spamhaus.net=127.0.0.2*3
   ${SPAMHAUS_DQS_KEY}.dbl.dq.spamhaus.net=127.0.0.3*4
   ${SPAMHAUS_DQS_KEY}.zrd.dq.spamhaus.net=127.0.0.2*3
+postscreen_dnsbl_reply_map = texthash:/opt/postfix/conf/dnsbl_reply
+EOF
+
+  cat <<EOF > /opt/postfix/conf/dnsbl_reply
+# Autogenerated by mailcow, using Spamhaus DQS lists
+${SPAMHAUS_DQS_KEY}.sbl.dq.spamhaus.net     sbl.spamhaus.org
+${SPAMHAUS_DQS_KEY}.xbl.dq.spamhaus.net     xbl.spamhaus.org
+${SPAMHAUS_DQS_KEY}.pbl.dq.spamhaus.net     pbl.spamhaus.org
+${SPAMHAUS_DQS_KEY}.zen.dq.spamhaus.net     zen.spamhaus.org
+${SPAMHAUS_DQS_KEY}.dbl.dq.spamhaus.net     dbl.spamhaus.org
+${SPAMHAUS_DQS_KEY}.zrd.dq.spamhaus.net     zrd.spamhaus.org
 EOF
 
 else