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[Postfix] only apply DNSBL if dns_blocklists.cf is not empty

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FreddleSpl0it 2023-08-02 16:48:22 +02:00
parent c45684b986
commit 5d3491c801
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GPG Key ID: 00E14E7634F4BEC5
1 changed files with 26 additions and 23 deletions
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49
data/Dockerfiles/postfix/postfix.sh
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@ -425,11 +425,12 @@ EOF
fi
DNSBL_CONFIG=$(grep -v '^#' /opt/postfix/conf/dns_blocklists.cf | grep '\S')
echo -e "\e[33mChecking if ASN for your IP is listed for Spamhaus Bad ASN List...\e[0m"
if [ -n "$SPAMHAUS_DQS_KEY" ]; then
echo -e "\e[32mDetected SPAMHAUS_DQS_KEY variable from mailcow.conf...\e[0m"
echo -e "\e[33mUsing DQS Blocklists from Spamhaus!\e[0m"
SPAMHAUS_DNSBL_CONFIG=$(cat <<EOF
if [ ! -z "$DNSBL_CONFIG" ]; then
echo -e "\e[33mChecking if ASN for your IP is listed for Spamhaus Bad ASN List...\e[0m"
if [ -n "$SPAMHAUS_DQS_KEY" ]; then
echo -e "\e[32mDetected SPAMHAUS_DQS_KEY variable from mailcow.conf...\e[0m"
echo -e "\e[33mUsing DQS Blocklists from Spamhaus!\e[0m"
SPAMHAUS_DNSBL_CONFIG=$(cat <<EOF
${SPAMHAUS_DQS_KEY}.zen.dq.spamhaus.net=127.0.0.[4..7]*6
${SPAMHAUS_DQS_KEY}.zen.dq.spamhaus.net=127.0.0.[10;11]*8
${SPAMHAUS_DQS_KEY}.zen.dq.spamhaus.net=127.0.0.3*4
@ -437,29 +438,29 @@ if [ -n "$SPAMHAUS_DQS_KEY" ]; then
${SPAMHAUS_DQS_KEY}.dbl.dq.spamhaus.net=127.0.0.3*4
${SPAMHAUS_DQS_KEY}.zrd.dq.spamhaus.net=127.0.0.2*3
EOF
)
else
response=$(curl --connect-timeout 15 --max-time 30 -s -o /dev/null -w "%{http_code}" "https://asn-check.mailcow.email")
if [ "$response" -eq 503 ]; then
echo -e "\e[31mThe AS of your IP is listed as a banned AS from Spamhaus!\e[0m"
echo -e "\e[33mNo SPAMHAUS_DQS_KEY found... Skipping Spamhaus blocklists entirely!\e[0m"
SPAMHAUS_DNSBL_CONFIG=""
elif [ "$response" -eq 200 ]; then
echo -e "\e[32mThe AS of your IP is NOT listed as a banned AS from Spamhaus!\e[0m"
echo -e "\e[33mUsing the open Spamhaus blocklists.\e[0m"
SPAMHAUS_DNSBL_CONFIG=$(cat <<EOF
)
else
response=$(curl --connect-timeout 15 --max-time 30 -s -o /dev/null -w "%{http_code}" "https://asn-check.mailcow.email")
if [ "$response" -eq 503 ]; then
echo -e "\e[31mThe AS of your IP is listed as a banned AS from Spamhaus!\e[0m"
echo -e "\e[33mNo SPAMHAUS_DQS_KEY found... Skipping Spamhaus blocklists entirely!\e[0m"
SPAMHAUS_DNSBL_CONFIG=""
elif [ "$response" -eq 200 ]; then
echo -e "\e[32mThe AS of your IP is NOT listed as a banned AS from Spamhaus!\e[0m"
echo -e "\e[33mUsing the open Spamhaus blocklists.\e[0m"
SPAMHAUS_DNSBL_CONFIG=$(cat <<EOF
zen.spamhaus.org=127.0.0.[10;11]*8
zen.spamhaus.org=127.0.0.[4..7]*6
zen.spamhaus.org=127.0.0.3*4
zen.spamhaus.org=127.0.0.2*3
EOF
)
)
else
echo -e "\e[31mWe couldn't determine your AS... (maybe DNS/Network issue?) Response Code: $response\e[0m"
echo -e "\e[33mDeactivating Spamhaus DNS Blocklists to be on the safe site!\e[0m"
SPAMHAUS_DNSBL_CONFIG=""
else
echo -e "\e[31mWe couldn't determine your AS... (maybe DNS/Network issue?) Response Code: $response\e[0m"
echo -e "\e[33mDeactivating Spamhaus DNS Blocklists to be on the safe site!\e[0m"
SPAMHAUS_DNSBL_CONFIG=""
fi
fi
fi
@ -467,7 +468,9 @@ fi
sed -i '/Overrides/q' /opt/postfix/conf/main.cf
echo >> /opt/postfix/conf/main.cf
# Append postscreen dnsbl sites to main.cf
echo -e "${DNSBL_CONFIG}\n${SPAMHAUS_DNSBL_CONFIG}" >> /opt/postfix/conf/main.cf
if [ ! -z "$DNSBL_CONFIG" ]; then
echo -e "${DNSBL_CONFIG}\n${SPAMHAUS_DNSBL_CONFIG}" >> /opt/postfix/conf/main.cf
fi
# Append user overrides
echo -e "\n# User Overrides" >> /opt/postfix/conf/main.cf
touch /opt/postfix/conf/extra.cf