diff --git a/core/admin/mailu/limiter.py b/core/admin/mailu/limiter.py
index 2d8380ad..85891ee3 100644
--- a/core/admin/mailu/limiter.py
+++ b/core/admin/mailu/limiter.py
@@ -56,9 +56,10 @@ class LimitWraperFactory(object):
         limiter = self.get_limiter(app.config['AUTH_RATELIMIT_IP'], 'auth-ip')
         client_network = utils.extract_network_from_ip(ip)
         if self.is_subject_to_rate_limits(ip):
-            if username and (self.storage.get(f'dedup-{client_network}-{username}') < 1):
-                self.storage.incr(f'dedup-{client_network}-{username}', limits.parse(app.config['AUTH_RATELIMIT_IP']).GRANULARITY.seconds ,True)
-                limiter.hit(client_network)
+            if username and (self.storage.get(f'dedup-{client_network}-{username}') > 0):
+                return
+            self.storage.incr(f'dedup-{client_network}-{username}', limits.parse(app.config['AUTH_RATELIMIT_IP']).GRANULARITY.seconds ,True)
+            limiter.hit(client_network)
 
     def should_rate_limit_user(self, username, ip, device_cookie=None, device_cookie_name=None):
         limiter = self.get_limiter(app.config["AUTH_RATELIMIT_USER"], 'auth-user')