--- a/rblsmtpd.c
+++ b/rblsmtpd.c
@@ -195,6 +195,7 @@
 {
   int flagwantdefaultrbl = 1;
   char *x;
+  char *y;
   int opt;
 
   ip_init();
@@ -213,6 +214,13 @@
     }
   }
 
+  y = env_get("RELAYCLIENT");
+  if (y) {
+    if (!*y) {
+      decision = 1;
+    }
+  }
+
   while ((opt = getopt(argc,argv,"bBcCt:r:a:")) != opteof)
     switch(opt) {
       case 'b': flagrblbounce = 1; break;