diff --git a/plogical/mailUtilities.py b/plogical/mailUtilities.py
index 00df0c6f3..59701151a 100644
--- a/plogical/mailUtilities.py
+++ b/plogical/mailUtilities.py
@@ -1637,6 +1637,7 @@ LogFile /var/log/clamav/clamav.log
     def reverse_dns_lookup(ip_address):
         """
         Perform reverse DNS lookup for the given IP address using external DNS servers.
+        Falls back to local DNS resolution if external APIs are unavailable.
         
         Args:
             ip_address: The IP address to perform reverse DNS lookup on
@@ -1652,38 +1653,35 @@ LogFile /var/log/clamav/clamav.log
             try:
                 fetchURLs = requests.get('https://cyberpanel.net/dnsServers.txt', timeout=10)
             except (ConnectionError, Timeout) as e:
-                logging.CyberCPLogFileWriter.writeToFile(f'Failed to fetch DNS server list from cyberpanel.net: {str(e)}')
-                return []
+                logging.CyberCPLogFileWriter.writeToFile(f'Failed to fetch DNS server list from cyberpanel.net: {str(e)}. Falling back to local DNS lookup.')
+                fetchURLs = None
             except RequestException as e:
-                logging.CyberCPLogFileWriter.writeToFile(f'Request error while fetching DNS server list: {str(e)}')
-                return []
+                logging.CyberCPLogFileWriter.writeToFile(f'Request error while fetching DNS server list: {str(e)}. Falling back to local DNS lookup.')
+                fetchURLs = None
 
-            if fetchURLs.status_code != 200:
-                logging.CyberCPLogFileWriter.writeToFile(f'Failed to fetch DNS server list: HTTP {fetchURLs.status_code}')
-                return []
+            # Try external API if available
+            if fetchURLs and fetchURLs.status_code == 200:
 
-            try:
-                urls_data = fetchURLs.json()
-                if 'urls' not in urls_data:
-                    logging.CyberCPLogFileWriter.writeToFile('DNS server list response missing "urls" key')
-                    return []
-                urls = urls_data['urls']
-            except (ValueError, KeyError) as e:
-                logging.CyberCPLogFileWriter.writeToFile(f'Failed to parse DNS server list JSON: {str(e)}')
-                return []
+                try:
+                    urls_data = fetchURLs.json()
+                    if 'urls' not in urls_data:
+                        logging.CyberCPLogFileWriter.writeToFile('DNS server list response missing "urls" key. Falling back to local DNS lookup.')
+                        fetchURLs = None
+                    else:
+                        urls = urls_data['urls']
+                        if not isinstance(urls, list) or len(urls) == 0:
+                            logging.CyberCPLogFileWriter.writeToFile('DNS server list is empty or invalid. Falling back to local DNS lookup.')
+                            fetchURLs = None
+                        else:
+                            # External API is available, proceed with queries
+                            if os.path.exists(ProcessUtilities.debugPath):
+                                logging.CyberCPLogFileWriter.writeToFile(f'DNS urls {urls}.')
 
-            if not isinstance(urls, list) or len(urls) == 0:
-                logging.CyberCPLogFileWriter.writeToFile('DNS server list is empty or invalid')
-                return []
+                            results = []
+                            successful_queries = 0
 
-            if os.path.exists(ProcessUtilities.debugPath):
-                logging.CyberCPLogFileWriter.writeToFile(f'DNS urls {urls}.')
-
-            results = []
-            successful_queries = 0
-
-            # Query each DNS server
-            for url in urls:
+                            # Query each DNS server
+                            for url in urls:
                 try:
                     response = requests.get(f'{url}/index.php?ip={ip_address}', timeout=5)
 
@@ -1748,18 +1746,58 @@ LogFile /var/log/clamav/clamav.log
                     logging.CyberCPLogFileWriter.writeToFile(f'Unexpected error while querying DNS server {url}: {str(e)}')
                     continue
 
-            if os.path.exists(ProcessUtilities.debugPath):
-                logging.CyberCPLogFileWriter.writeToFile(f'rDNS result of {ip_address} is {str(results)} (successful queries: {successful_queries}/{len(urls)})')
+                            if os.path.exists(ProcessUtilities.debugPath):
+                                logging.CyberCPLogFileWriter.writeToFile(f'rDNS result of {ip_address} is {str(results)} (successful queries: {successful_queries}/{len(urls)})')
 
-            # Return results (empty list if no successful queries)
-            return results
+                            # If external API returned results, return them
+                            if results:
+                                return results
+                            # Otherwise fall through to local DNS lookup
+                            logging.CyberCPLogFileWriter.writeToFile(f'External DNS API queries returned no results for {ip_address}. Falling back to local DNS lookup.')
+                except (ValueError, KeyError) as e:
+                    logging.CyberCPLogFileWriter.writeToFile(f'Failed to parse DNS server list JSON: {str(e)}. Falling back to local DNS lookup.')
+                    fetchURLs = None
+            else:
+                if fetchURLs:
+                    logging.CyberCPLogFileWriter.writeToFile(f'Failed to fetch DNS server list: HTTP {fetchURLs.status_code if fetchURLs else "N/A"}. Falling back to local DNS lookup.')
+                fetchURLs = None
+
+            # Fallback to local DNS lookup when external APIs fail or return no results
+            try:
+                import socket
+                rdns = socket.gethostbyaddr(ip_address)[0]
+                rdns_clean = rdns.rstrip('.')
+                logging.CyberCPLogFileWriter.writeToFile(f'Local DNS lookup successful for {ip_address}: {rdns_clean}')
+                return [rdns_clean]
+            except socket.herror as e:
+                logging.CyberCPLogFileWriter.writeToFile(f'Local DNS lookup failed for {ip_address}: {str(e)}')
+                return []
+            except Exception as e:
+                logging.CyberCPLogFileWriter.writeToFile(f'Unexpected error in local DNS lookup for {ip_address}: {str(e)}')
+                return []
             
         except ImportError as e:
-            logging.CyberCPLogFileWriter.writeToFile(f'Failed to import requests library: {str(e)}')
-            return []
+            logging.CyberCPLogFileWriter.writeToFile(f'Failed to import requests library: {str(e)}. Attempting local DNS lookup.')
+            try:
+                import socket
+                rdns = socket.gethostbyaddr(ip_address)[0]
+                rdns_clean = rdns.rstrip('.')
+                logging.CyberCPLogFileWriter.writeToFile(f'Local DNS lookup successful for {ip_address}: {rdns_clean}')
+                return [rdns_clean]
+            except Exception as local_e:
+                logging.CyberCPLogFileWriter.writeToFile(f'Local DNS lookup also failed for {ip_address}: {str(local_e)}')
+                return []
         except BaseException as e:
-            logging.CyberCPLogFileWriter.writeToFile(f'Unexpected error in reverse_dns_lookup for IP {ip_address}: {str(e)}')
-            return []
+            logging.CyberCPLogFileWriter.writeToFile(f'Unexpected error in reverse_dns_lookup for IP {ip_address}: {str(e)}. Attempting local DNS lookup.')
+            try:
+                import socket
+                rdns = socket.gethostbyaddr(ip_address)[0]
+                rdns_clean = rdns.rstrip('.')
+                logging.CyberCPLogFileWriter.writeToFile(f'Local DNS lookup successful for {ip_address}: {rdns_clean}')
+                return [rdns_clean]
+            except Exception as local_e:
+                logging.CyberCPLogFileWriter.writeToFile(f'Local DNS lookup also failed for {ip_address}: {str(local_e)}')
+                return []
 
     @staticmethod
     def SaveEmailLimitsNew(tempPath):