diff --git a/README.md b/README.md
index a67e747..87e6a42 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,7 @@
 # Zabbix-SSL
 
 SSL certificates expiry date monitoring separated by groups, suitable for monitoring hundreds of websites.
+Support port per domain.
 
 **Installation**
 
@@ -8,7 +9,7 @@ Pre-requisites: Zabbix Sender, Openssl Client, JQ - https://stedolan.github.io/j
 
 1. Copy the scripts and SSL configuration to zabbix external scripts directory: /usr/lib/zabbix/externalscripts
 
-2. Add domains to the configuration file: ssl/sslCertDomains.json
+2. Add domains and ports to the configuration file: ssl/sslCertDomains.json
 
 3. Create zabbix host and link with SSL template, add macro to the host: {$DOMAIN_GROUP}, macro value should match the group name in the SSL configuration file.
 
diff --git a/zabbix-externalscripts/ssl/sslCertDomains.json b/zabbix-externalscripts/ssl/sslCertDomains.json
index 9266585..4251282 100644
--- a/zabbix-externalscripts/ssl/sslCertDomains.json
+++ b/zabbix-externalscripts/ssl/sslCertDomains.json
@@ -1,12 +1,36 @@
 {
   "DomainGroup1": [
-    {"domain": "www.a.com"},
-    {"domain": "www.b.com"},
-    {"domain": "www.c.com"}
+    {"domain": {
+      "name": "www.a.com"
+      "port": "443"
+      }
+    },
+    {"domain": {
+      "name": "www.b.com"
+      "port": "443"
+      }
+    },
+    {"domain": {
+      "name": "www.c.com"
+      "port": "443"
+      }
+    }
   ],
   "DomainGroup2": [
-    {"domain": "www.d.com"},
-    {"domain": "www.e.com"},
-    {"domain": "www.f.com"}
+    {"domain": {
+      "name": "www.d.com"
+      "port": "443"
+      }
+    },
+    {"domain": {
+      "name": "www.e.com"
+      "port": "443"
+      }
+    },
+    {"domain": {
+      "name": "www.f.com"
+      "port": "443"
+      }
+    }
   ]
-}
\ No newline at end of file
+}
diff --git a/zabbix-externalscripts/sslCertExpiryCheck.sh b/zabbix-externalscripts/sslCertExpiryCheck.sh
old mode 100644
new mode 100755
index d5e4f90..790e660
--- a/zabbix-externalscripts/sslCertExpiryCheck.sh
+++ b/zabbix-externalscripts/sslCertExpiryCheck.sh
@@ -13,20 +13,22 @@
 
 # Query domains in a group
 DOMAIN_GROUP=$1
-ZABBIX_HOST=$2
+ZABBIX_HOST="$2"
 SCRIPT_DIR="$( cd "$( dirname "$0" )" && pwd )"
 ALL_DOMAINS=$SCRIPT_DIR"/ssl/sslCertDomains.json"
-QUERY_DOMAINS=$(cat $ALL_DOMAINS | jq --arg DOMAIN_GROUP $DOMAIN_GROUP -r '.[$DOMAIN_GROUP][] .domain' | xargs 2>/dev/null)
+QUERY_DOMAINS=$(cat $ALL_DOMAINS | jq --arg DOMAIN_GROUP $DOMAIN_GROUP -r '.[$DOMAIN_GROUP][] | .domain.name + "-" + .domain.port' | xargs 2>/dev/null)
 
 get_SSL_Certs_Expirydate() {
   for domain in $QUERY_DOMAINS; do
-  expiry_date=$(timeout 3 openssl s_client -host "$domain" -port 443 -servername "$domain" -showcerts </dev/null 2>/dev/null | sed -n '/BEGIN CERTIFICATE/,/END CERT/p' | openssl x509 -text 2>/dev/null | sed -n 's/ *Not After : *//p')
+  NAME=${domain%-*}
+  PORT=${domain##*-}
+  expiry_date=$(echo QUIT | timeout 3 openssl s_client -host "$NAME" -port "$PORT" -servername "$NAME" -showcerts </dev/null 2>/dev/null | sed -n '/BEGIN CERTIFICATE/,/END CERT/p' | openssl x509 -text 2>/dev/null | sed -n 's/ *Not After : *//p')
   if [ -n "$expiry_date" ]; then
     expiry_date_unix=$(date '+%s' --date "$expiry_date")
   else
     expiry_date_unix=0
   fi
-  echo $ZABBIX_HOST" ssl.cert.expirydate["$domain"] "$expiry_date_unix
+  echo "\"$ZABBIX_HOST\""" ssl.cert.expirydate["${NAME}-${PORT}"] "$expiry_date_unix
 done
 }
 
@@ -36,4 +38,4 @@ if [ -n "$response" ]; then
   echo "$response"
 else
   echo "$result"
-fi
\ No newline at end of file
+fi
diff --git a/zabbix-externalscripts/sslDomainsDiscovery.sh b/zabbix-externalscripts/sslDomainsDiscovery.sh
old mode 100644
new mode 100755
index ae4fa4e..dcc09f6
--- a/zabbix-externalscripts/sslDomainsDiscovery.sh
+++ b/zabbix-externalscripts/sslDomainsDiscovery.sh
@@ -8,9 +8,9 @@
 DOMAIN_GROUP=$1
 SCRIPT_DIR="$( cd "$( dirname "$0" )" && pwd )"
 ALL_DOMAINS=$SCRIPT_DIR"/ssl/sslCertDomains.json"
-QUERY_DOMAINS=$(cat $ALL_DOMAINS | jq  --arg DOMAIN_GROUP $DOMAIN_GROUP -r '.[$DOMAIN_GROUP][].domain' | xargs 2>/dev/null)
+QUERY_DOMAINS=$(cat $ALL_DOMAINS | jq  --arg DOMAIN_GROUP $DOMAIN_GROUP -r '.[$DOMAIN_GROUP][] | .domain.name + "-" + .domain.port' | xargs 2>/dev/null)
 
 for domain in $QUERY_DOMAINS; do
   domainlist="$domainlist,"'{"{#DOMAIN}":"'${domain# }'"}'
 done
-echo '{"data":['${domainlist#,}']}'
\ No newline at end of file
+echo '{"data":['${domainlist#,}']}'