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[Postfix] rework dns_blocklists.cf generation

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FreddleSpl0it 2023-08-02 16:36:59 +02:00
parent 5c886d2f4e
commit c45684b986
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GPG Key ID: 00E14E7634F4BEC5
3 changed files with 51 additions and 50 deletions
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74
data/Dockerfiles/postfix/postfix.sh
View File

@ -393,12 +393,43 @@ query = SELECT goto FROM spamalias
AND validity >= UNIX_TIMESTAMP()
EOF
if [ ! -f /opt/postfix/conf/dns_blocklists.cf ]; then
cat <<EOF > /opt/postfix/conf/dns_blocklists.cf
# This file can be edited.
# Delete this file and restart postfix container to revert any changes.
postscreen_dnsbl_sites = wl.mailspike.net=127.0.0.[18;19;20]*-2
hostkarma.junkemailfilter.com=127.0.0.1*-2
list.dnswl.org=127.0.[0..255].0*-2
list.dnswl.org=127.0.[0..255].1*-4
list.dnswl.org=127.0.[0..255].2*-6
list.dnswl.org=127.0.[0..255].3*-8
ix.dnsbl.manitu.net*2
bl.spamcop.net*2
bl.suomispam.net*2
hostkarma.junkemailfilter.com=127.0.0.2*3
hostkarma.junkemailfilter.com=127.0.0.4*2
hostkarma.junkemailfilter.com=127.0.1.2*1
backscatter.spameatingmonkey.net*2
bl.ipv6.spameatingmonkey.net*2
bl.spameatingmonkey.net*2
b.barracudacentral.org=127.0.0.2*7
bl.mailspike.net=127.0.0.2*5
bl.mailspike.net=127.0.0.[10;11;12]*4
dnsbl.sorbs.net=127.0.0.10*8
dnsbl.sorbs.net=127.0.0.5*6
dnsbl.sorbs.net=127.0.0.7*3
dnsbl.sorbs.net=127.0.0.8*2
dnsbl.sorbs.net=127.0.0.6*2
dnsbl.sorbs.net=127.0.0.9*2
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"
cat <<EOF > /tmp/spamhaus.cf
# Autogenerated by mailcow, using Spamhaus DQS lists
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
${SPAMHAUS_DQS_KEY}.zen.dq.spamhaus.net=127.0.0.3*4
@ -406,47 +437,42 @@ if [ -n "$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 [ "$response" -eq 503 ]; then
echo -e "\e[31mThe AS of your IP is listed as a banned AS from Spamhaus!\e[0m"
echo -e "\e[33mNo SPAMHAUS_DQS_KEY found... Skipping Spamhaus blocklists entirely!\e[0m"
cat <<EOF > /tmp/spamhaus.cf
# Autogenerated by mailcow, using no Spamhaus DNSBL
EOF
echo -e "\e[31mThe AS of your IP is listed as a banned AS from Spamhaus!\e[0m"
echo -e "\e[33mNo SPAMHAUS_DQS_KEY found... Skipping Spamhaus blocklists entirely!\e[0m"
SPAMHAUS_DNSBL_CONFIG=""
elif [ "$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"
cat <<EOF > /tmp/spamhaus.cf
# Autogenerated by mailcow, using public spamhaus lists
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"
cat <<EOF > /tmp/spamhaus.cf
# Autogenerated by mailcow, using no Spamhaus DNSBL
EOF
echo -e "\e[31mWe couldn't determine your AS... (maybe DNS/Network issue?) Response Code: $response\e[0m"
echo -e "\e[33mDeactivating Spamhaus DNS Blocklists to be on the safe site!\e[0m"
SPAMHAUS_DNSBL_CONFIG=""
fi
fi
sed -i '/User overrides/q' /opt/postfix/conf/main.cf
# Append postscreen dnsbl sites to main.cf
cat /opt/postfix/conf/dns_blocklists.cf >> /opt/postfix/conf/main.cf
cat /tmp/spamhaus.cf >> /opt/postfix/conf/main.cf
# Append user overrides
# Reset main.cf
sed -i '/Overrides/q' /opt/postfix/conf/main.cf
echo >> /opt/postfix/conf/main.cf
# Append postscreen dnsbl sites to main.cf
echo -e "${DNSBL_CONFIG}\n${SPAMHAUS_DNSBL_CONFIG}" >> /opt/postfix/conf/main.cf
# Append user overrides
echo -e "\n# User Overrides" >> /opt/postfix/conf/main.cf
touch /opt/postfix/conf/extra.cf
sed -i '/myhostname/d' /opt/postfix/conf/extra.cf
echo -e "myhostname = ${MAILCOW_HOSTNAME}\n$(cat /opt/postfix/conf/extra.cf)" > /opt/postfix/conf/extra.cf
cat /opt/postfix/conf/extra.cf >> /opt/postfix/conf/main.cf
if [ ! -f /opt/postfix/conf/custom_transport.pcre ]; then

25
data/conf/postfix/dns_blocklists.cf
View File

@ -1,25 +0,0 @@
# Content loaded from dns_blocklists.cf, edit only if really necessary!
postscreen_dnsbl_sites = wl.mailspike.net=127.0.0.[18;19;20]*-2
hostkarma.junkemailfilter.com=127.0.0.1*-2
list.dnswl.org=127.0.[0..255].0*-2
list.dnswl.org=127.0.[0..255].1*-4
list.dnswl.org=127.0.[0..255].2*-6
list.dnswl.org=127.0.[0..255].3*-8
ix.dnsbl.manitu.net*2
bl.spamcop.net*2
bl.suomispam.net*2
hostkarma.junkemailfilter.com=127.0.0.2*3
hostkarma.junkemailfilter.com=127.0.0.4*2
hostkarma.junkemailfilter.com=127.0.1.2*1
backscatter.spameatingmonkey.net*2
bl.ipv6.spameatingmonkey.net*2
bl.spameatingmonkey.net*2
b.barracudacentral.org=127.0.0.2*7
bl.mailspike.net=127.0.0.2*5
bl.mailspike.net=127.0.0.[10;11;12]*4
dnsbl.sorbs.net=127.0.0.10*8
dnsbl.sorbs.net=127.0.0.5*6
dnsbl.sorbs.net=127.0.0.7*3
dnsbl.sorbs.net=127.0.0.8*2
dnsbl.sorbs.net=127.0.0.6*2
dnsbl.sorbs.net=127.0.0.9*2

2
data/conf/postfix/main.cf
View File

@ -169,4 +169,4 @@ smtps_smtpd_tls_mandatory_protocols = !SSLv2, !SSLv3, !TLSv1, !TLSv1.1
parent_domain_matches_subdomains = debug_peer_list,fast_flush_domains,mynetworks,qmqpd_authorized_clients
# DO NOT EDIT ANYTHING BELOW #
# User overrides #
# Overrides #