possible resolution of https://community.cyberpanel.net/t/domain-that-you-have-provided-is-not-configured-as-rdns-for-your-server-ip-404/52190

plogical/virtualHostUtilities.py

@@ -76,6 +76,13 @@ class virtualHostUtilities:
         except:
             CurrentHostName = ''
 
+        if not skipRDNSCheck:
+            if not os.path.exists('/home/cyberpanel/postfix'):
+                message = 'This server does not come with postfix installed. [404]'
+                print(message)
+                logging.CyberCPLogFileWriter.statusWriter(tempStatusPath, message)
+                logging.CyberCPLogFileWriter.writeToFile(message)
+
 
         ####