diff --git a/actions.go b/actions.go
index 9874d9b..e92f7b1 100644
--- a/actions.go
+++ b/actions.go
@@ -48,7 +48,7 @@ func writeServers() error {
 	return nil
 }
 
-func sendFileToAllServers(filePath string) error {
+func sendFileToAllServers(filePath, cert_idx string) error {
 	var theError error
 	numservers := len(servers)
 	c := make(chan string)
@@ -65,7 +65,7 @@ func sendFileToAllServers(filePath string) error {
 				}
 
 				log.Println("Parallel execution send file to server: " + srv + "...")
-				err := sendFileToServer(filePath, srv)
+				err := sendFileToServer(filePath, srv, cert_idx)
 				if err != nil {
 					log.Println(err.Error())
 					theError = err
@@ -92,17 +92,18 @@ func sendFileToAllServers(filePath string) error {
 	return theError //if any one or more fail, return an error for it (the last one that fails)
 }
 
-func sendFileToServer(filePath, server string) error {
+func sendFileToServer(filePath, server, cert_idx string) error {
 	log.Println("Send file " + filePath + " to " + server + " starting...")
 
 	_, fileName := path.Split(filePath)
-	dest := strings.SplitN(fileName, "__", 2)[0] //cert__abcdef1234567890.tmpfile --> "cert"
+	fileType := strings.SplitN(fileName, "__", 2)[0] //cert__abcdef1234567890.tmpfile --> "cert"
 	data, err := os.Open(filePath)
 	if err != nil {
 		return errors.New("sendFileToServer: Could not open temporary file " + filePath + ": " + err.Error())
 	}
-	url := syncScheme + server + ":" + syncPort + "/api/file/upload/" + dest
-	log.Println("Send file " + filePath + " to " + url + "...")
+	//url := syncScheme + server + ":" + syncPort + "/api/file/upload/" + fileType + "/" + fmt.Sprintf("%02d", cert_idx)
+	url := syncScheme + server + ":" + syncPort + "/api/file/upload/" + fileType + "/" + cert_idx
+	log.Println("Send file '" + filePath + "' to " + url + "...")
 
 	req, err := http.NewRequest("PUT", url, data)
 	if err != nil {
@@ -133,7 +134,7 @@ func sendFileToServer(filePath, server string) error {
 		log.Println(errorString)
 		return errors.New(errorString)
 	}
-	log.Println("Upload [" + dest + "] to " + server + " success!")
+	log.Println("Upload [" + fileType + "] to " + server + " success!")
 	return nil
 }
 
@@ -160,6 +161,9 @@ func renew(cert_idx int) error {
 		log.Println(domainlist)
 	}
 
+	// GetSSL Expected WebDAV Format: (HTTPS ONLY!)
+	// ";davs:davsuser:davspassword:{DOMAIN}:443:/path"
+
 	//ACL string
 	aclstring := appconf.LetsEncryptValidationPath
 	if appconf.SyncType == "ssh" {
@@ -190,10 +194,11 @@ func renew(cert_idx int) error {
 			if server == appconf.Hostname {
 				continue
 			}
-			domain_cert_location += ";ssh:" + appconf.Username + "@" + server + ":" + appconf.TLSCertPath + fmt.Sprintf("%02d", cert_idx) + ".crt"
 			//domain_cert_location += ";davs:leapi:" + appconf.SecretKey + ":" + server + ":" + syncPort + ":/api/file/upload/cert"
+			domain_cert_location += ";ssh:" + appconf.Username + "@" + server + ":" + appconf.TLSCertPath + fmt.Sprintf("%02d", cert_idx) + ".crt"
 		}
 	} else { //file sync type is HTTPS
+		// ;davs:user:pass:hostname:port:/api/file/sync/cert/{cert_idx}
 		domain_cert_location += ";davs:" + appconf.Username + ":" + appconf.SecretKey + ":" + appconf.Hostname + ":" + appconf.HTTPS_ServerPort + ":/api/file/sync/cert/" + fmt.Sprintf("%02d", cert_idx)
 	}
 	err = os.Setenv("DOMAIN_CERT_LOCATION", domain_cert_location)
@@ -207,8 +212,8 @@ func renew(cert_idx int) error {
 			if server == appconf.Hostname {
 				continue
 			}
-			domain_key_location += ";ssh:" + appconf.Username + "@" + server + ":" + appconf.TLSKeyPath + fmt.Sprintf("%02d", cert_idx) + ".key"
 			//domain_key_location += ";davs:leapi:" + appconf.SecretKey + ":" + server + ":" + syncPort + ":/api/file/upload/key"
+			domain_key_location += ";ssh:" + appconf.Username + "@" + server + ":" + appconf.TLSKeyPath + fmt.Sprintf("%02d", cert_idx) + ".key"
 		}
 	} else { //file sync type is HTTPS
 		domain_key_location += ";davs:" + appconf.Username + ":" + appconf.SecretKey + ":" + appconf.Hostname + ":" + appconf.HTTPS_ServerPort + ":/api/file/sync/key/" + fmt.Sprintf("%02d", cert_idx)
@@ -224,8 +229,8 @@ func renew(cert_idx int) error {
 			if server == appconf.Hostname {
 				continue
 			}
-			domain_chain_location += ";ssh:" + appconf.Username + "@" + server + ":" + appconf.TLSChainPath + fmt.Sprintf("%02d", cert_idx) + ".crt"
 			//domain_chain_location += ";davs:leapi:" + appconf.SecretKey + ":" + server + ":" + syncPort + ":/api/file/upload/chain"
+			domain_chain_location += ";ssh:" + appconf.Username + "@" + server + ":" + appconf.TLSChainPath + fmt.Sprintf("%02d", cert_idx) + ".crt"
 		}
 	} else { //file sync type is HTTPS
 		domain_chain_location += ";davs:" + appconf.Username + ":" + appconf.SecretKey + ":" + appconf.Hostname + ":" + appconf.HTTPS_ServerPort + ":/api/file/sync/chain/" + fmt.Sprintf("%02d", cert_idx)
@@ -235,14 +240,14 @@ func renew(cert_idx int) error {
 		return errors.New("RENEW: error setting DOMAIN_CHAIN_LOCATION environment variable: " + err.Error())
 	}
 
-	domain_pem_location := appconf.TLSPEMPath
+	domain_pem_location := appconf.TLSPEMPath + fmt.Sprintf("%02d", cert_idx) + ".pem"
 	if appconf.SyncType == "ssh" {
 		for _, server := range servers {
 			if server == appconf.Hostname {
 				continue
 			}
-			domain_pem_location += ";ssh:" + appconf.Username + "@" + server + ":" + appconf.TLSPEMPath + fmt.Sprintf("%02d", cert_idx) + ".pem"
 			//domain_pem_location += ";davs:leapi:" + appconf.SecretKey + ":" + server + ":" + syncPort + ":/api/file/upload/pem"
+			domain_pem_location += ";ssh:" + appconf.Username + "@" + server + ":" + appconf.TLSPEMPath + fmt.Sprintf("%02d", cert_idx) + ".pem"
 		}
 	} else { //file sync type is HTTPS
 		domain_pem_location += ";davs:" + appconf.Username + ":" + appconf.SecretKey + ":" + appconf.Hostname + ":" + appconf.HTTPS_ServerPort + ":/api/file/sync/pem/" + fmt.Sprintf("%02d", cert_idx)
@@ -252,15 +257,15 @@ func renew(cert_idx int) error {
 		return errors.New("RENEW: error setting DOMAIN_PEM_LOCATION environment variable: " + err.Error())
 	}
 
-	//these parameters don't seem to be respected by gettssl from environment variables, so write them to config file:
-	ca_cert_location := appconf.TLSCAPath
+	//these parameters don't seem to be respected by GetSSL from environment variables, so write them to config file:
+	ca_cert_location := appconf.TLSCAPath + ".crt"
 	if appconf.SyncType == "ssh" {
 		for _, server := range servers {
 			if server == appconf.Hostname {
 				continue
 			}
-			ca_cert_location += ";ssh:" + appconf.Username + "@" + server + ":" + appconf.TLSCAPath + fmt.Sprintf("%02d", cert_idx) + ".crt"
 			//ca_cert_location += ";davs:leapi:" + appconf.SecretKey + ":" + server + ":" + syncPort + ":/api/file/upload/ca"
+			ca_cert_location += ";ssh:" + appconf.Username + "@" + server + ":" + appconf.TLSCAPath + fmt.Sprintf("%02d", cert_idx) + ".crt"
 		}
 	} else { //file sync type is HTTPS
 		ca_cert_location += ";davs:" + appconf.Username + ":" + appconf.SecretKey + ":" + appconf.Hostname + ":" + appconf.HTTPS_ServerPort + ":/api/file/sync/ca/" + fmt.Sprintf("%02d", cert_idx)
diff --git a/api.go b/api.go
index 95a59d2..f546c61 100644
--- a/api.go
+++ b/api.go
@@ -101,6 +101,7 @@ func apiUpload(c echo.Context) error {
 
 func apiUploadSync(c echo.Context) error {
 	fileType := c.Param("fileType")
+	cert_idx := c.Param("cert_idx")
 	r := c.Request()
 
 	//Read the upload data
@@ -108,22 +109,22 @@ func apiUploadSync(c echo.Context) error {
 	body, err := ioutil.ReadAll(io.LimitReader(r.Body, blimit))
 	if err != nil {
 		log.Println(err.Error())
-		return c.JSON(errorOut(http.StatusInternalServerError, "Error reading post body: "+err.Error()))
+		return c.JSON(errorOut(http.StatusInternalServerError, "Error reading PUT body: "+err.Error()))
 	}
 
 	uuid := generateUUID()
 	filePath := appconf.SrvDir + "/" + fileType + "__" + uuid + ".tmpfile"
 
+	log.Println("Received PUT for sync to " + r.RequestURI)
+	log.Println("Writing to " + filePath)
+
 	//Write the file
 	err = ioutil.WriteFile(filePath, body, 0644)
 	if err != nil {
 		return c.JSON(errorOut(http.StatusInternalServerError, "Could not write temporary file: "+err.Error()))
 	}
 
-	log.Println("Received PUT for sync to " + r.RequestURI)
-	log.Println("Writing to " + filePath)
-
-	err = sendFileToAllServers(filePath)
+	err = sendFileToAllServers(filePath, cert_idx)
 	if err != nil {
 		log.Println(err.Error())
 		return c.JSON(errorOut(http.StatusInternalServerError, "Error sending file "+filePath+" to other servers: "+err.Error()))
diff --git a/leapi_config.json.sample b/leapi_config.json.sample
index fe3f8da..a4c8d87 100644
--- a/leapi_config.json.sample
+++ b/leapi_config.json.sample
@@ -1,7 +1,7 @@
 //RuhNet LEAPI Config file
 //configDir set by environment variable LEAPI_CONFDIR, otherwise assumed to be /opt/leapi or ./
 {
-	"hostname":"web1.mydomain.net", 			//hostname or IP of this particular server; must match the server you add to LEAPI. You can use "-" to use the system hostname (must be resolvable by other LEAPI systems).
+	"hostname":"web1.mydomain.net", 			//hostname or IP of this particular server; MUST match the server you add to LEAPI. You can use "-" to use the system hostname (must be resolvable by other LEAPI systems).
 	"primary_domain":"mydomain.net", 			//the main base domain that is always present
 	"srv_dir":"/opt/leapi", 					//LEAPI installed directory
 	"sync_type":"https", 						//method of transferring files between LEAPI hosts. "ssh" or "https"
@@ -9,16 +9,17 @@
 	"log_file":"/var/log/leapi.log",
 	"debug":false,
 	"frontend_url":"admin.mydomain.net",	 	//the frontend URL, if any (for CORS). Use "-" if none.
-	"http_server_port":"80",					//set to 80 if you aren't using a separate web server
-	"https_server_port":"-",					//set to "-" to disable HTTPS (mainly useful for initial setup)
-	"tls_cert_path_prefix":"/etc/ssl/cert",
+	"http_server_port":"80",					//set to 80 if you are not using a separate web server or proxy. "-" will assume port 80.
+	"https_server_enable":false,				//set to false to disable HTTPS listener (for initial setup, or for using a separate web server/proxy)
+	"https_server_port":"-",			        //the port your HTTPS server is running on, whether LEAPI or an external web server/proxy. Set to "-" for default (port 443)
+	"tls_cert_path_prefix":"/etc/ssl/cert",		//file paths DO NOT INCLUDE EXTENSION. "/etc/ssl/cert" will write files "/etc/ssl/cert01.crt", "/etc/ssl/cert02.crt", etc.
 	"tls_key_path_prefix":"/etc/ssl/privkey",
 	"tls_chain_path_prefix":"/etc/ssl/chain",
 	"tls_pem_path_prefix":"/etc/ssl/domain",
 	"tls_ca_path_prefix":"/etc/ssl/ca",
+	"max_domains_per_cert":100,                 //100 max
 	"letsencrypt_validation_path":"-",			//if "-", LEAPI handles this and you don't use a separate web server
 	"renew_allow_days":"70",
-	"max_domains_per_cert":100,
 	"reload_command":"systemctl reload leapi ; systemctl restart nginx",
 	"check_port":"443", //the port/service to check to verify cert installation (https/imap/imaps/xmpp/ftp/smtp)
 	"production":false, //if false, the staging LE server will be used. Set true to use the rate limited real server.
diff --git a/main.go b/main.go
index 0edd842..174d12e 100644
--- a/main.go
+++ b/main.go
@@ -60,6 +60,7 @@ type LEAPIConfig struct {
 	Debug                     bool   `json:"debug"`
 	HTTP_ServerPort           string `json:"http_server_port"`
 	HTTPS_ServerPort          string `json:"https_server_port"`
+	HTTPS_ServerEnable        bool   `json:"https_server_enable"`
 	TLSCertPath               string `json:"tls_cert_path_prefix"`
 	TLSKeyPath                string `json:"tls_key_path_prefix"`
 	TLSChainPath              string `json:"tls_chain_path_prefix"`
@@ -192,8 +193,21 @@ func main() {
 		}
 	}
 
+	//set ports to defaults if "-" or zero
+	if appconf.HTTP_ServerPort == "-" || appconf.HTTP_ServerPort == "0" {
+		appconf.HTTP_ServerPort = "80"
+	}
+	if appconf.HTTPS_ServerPort == "-" || appconf.HTTPS_ServerPort == "0" {
+		appconf.HTTPS_ServerPort = "443"
+	}
+
+	//set sync port
 	syncPort = appconf.HTTP_ServerPort
-	if appconf.LetsEncryptValidationPath == "-" {
+	if appconf.SyncType == "https" {
+		syncPort = appconf.HTTPS_ServerPort
+	}
+
+	if appconf.LetsEncryptValidationPath == "-" || appconf.LetsEncryptValidationPath == "" {
 		appconf.LetsEncryptValidationPath = appconf.SrvDir + "/acme-challenge"
 	}
 
@@ -287,7 +301,7 @@ func main() {
 	// HTTP SERVERS CONFIG:
 
 	//TLS Server
-	if appconf.HTTPS_ServerPort != "-" { //disable HTTPS if port is zero
+	if appconf.HTTPS_ServerEnable {
 
 		syncScheme = "https://"
 		syncPort = appconf.HTTPS_ServerPort
diff --git a/sync.go b/sync.go
index 1bb1464..ed32919 100644
--- a/sync.go
+++ b/sync.go
@@ -139,6 +139,7 @@ func syncServersFromHost(host string) error {
 	return nil
 }
 
+// Get domains from server and write what is received to this server's domains.json file.
 func syncDomainsFromHost(host string) error {
 	var theError error
 	req, err := http.NewRequest("GET", syncScheme+host+":"+syncPort+"/api/domains", nil)