Implemented remote Bad AS lookup

update.sh

@@ -256,7 +256,9 @@ fi
 }
 
 detect_bad_asn() {
-  if curl -s http://fuzzy.mailcow.email/asn_list.txt | grep $(whois -h whois.radb.net $(curl -s http://ipv4.mailcow.email) | grep -i origin | tr -s " " | cut -d " " -f2 | head -1) > /dev/null ; then
+  echo -e "\e[33mDetecting if your IP is listed on Spamhaus Bad ASN List...\e[0m"
+  response=$(curl --connect-timeout 15 --retry 5 --max-time 30 -s -o /dev/null -w "%{http_code}" "https://asn-check.mailcow.email")
+  if [ "$response" -eq 403 ]; then
     if [ -z "$SPAMHAUS_DQS_KEY" ]; then
       echo -e "\e[33mYour server's public IP uses an AS that is blocked by Spamhaus to use their DNS public blocklists for Postfix.\e[0m"
       echo -e "\e[33mmailcow did not detected a value for the variable SPAMHAUS_DQS_KEY inside mailcow.conf!\e[0m"
@@ -271,6 +273,12 @@ detect_bad_asn() {
       echo -e "\e[33mYour server's public IP uses an AS that is blocked by Spamhaus to use their DNS public blocklists for Postfix.\e[0m"
       echo -e "\e[32mmailcow detected a Value for the variable SPAMHAUS_DQS_KEY inside mailcow.conf. Postfix will use DQS with the given API key...\e[0m"
     fi
+  elif [ "$response" -eq 200 ]; then
+    echo -e "\e[33mCheck completed! Your IP is \e[32mclean\e[0m"
+  elif [ "$response" -eq 429 ]; then
+    echo -e "\e[33mCheck completed! \e[31mYour IP seems to be rate limited on the ASN Check service... please try again later!\e[0m"
+  else
+    echo -e "\e[31mCheck failed! \e[0mMaybe a DNS or Network problem?\e[0m"
   fi
 }
 
@@ -320,7 +328,7 @@ umask 0022
 unset COMPOSE_COMMAND
 unset DOCKER_COMPOSE_VERSION
 
-for bin in curl docker git awk sha1sum grep cut whois; do
+for bin in curl docker git awk sha1sum grep cut; do
   if [[ -z $(command -v ${bin}) ]]; then 
   echo "Cannot find ${bin}, exiting..." 
   exit 1;