Enable overriding the DNS NS hostname

config/fido.php

@@ -1,6 +1,7 @@
 <?php
 
 return [
+
 	// When sending areafix/filefix messages, validate to addresses
 	'areafilefix' => ['areafix','filefix','rexfix','areamgr'],
 
@@ -10,6 +11,8 @@ return [
 	// Directory to use for any data we want to store locally
 	'dir' => env('FIDO_DIR', 'fido'),
 
+	'dns_ns' => env('FIDO_DNS_NS', gethostname()),
+
 	// Our Storage::disk() for files storage
 	'file_disk' => env('FIDO_DIR_FILES', 's3'),