Add all defaults to ratelimit module config in Rspamd

data/conf/rspamd/local.d/ratelimit.conf

@@ -1,8 +1,18 @@
 rates {
+  # Limit for all mail per recipient (burst 100, rate 2 per minute)
   to = [100, 0.033333333];
+  # Limit for all mail per one source ip (burst 30, rate 1.5 per minute)
   to_ip = [30, 0.025];
+  # Limit for all mail per one source ip and from address (burst 20, rate 1 per minute)
   to_ip_from = [20, 0.01666666667];
+  # Limit for all bounce mail (burst 10, rate 2 per hour)
   bounce_to = [10, 0.000555556];
+  # Limit for bounce mail per one source ip (burst 5, rate 1 per hour)
   bounce_to_ip = [5, 0.000277778];
+  # Limit for all mail per authenticated user (burst 20, rate 1 per minute)
   user = [20, 0.01666666667];
 }
+# If symbol is specified, then it is inserted instead of setting result
+#symbol = "R_RATELIMIT";
+whitelisted_rcpts = "postmaster,mailer-daemon";
+max_rcpt = 5;