diff --git a/workers/sender.py b/workers/sender.py
index 09ced4e..5ac8c65 100644
--- a/workers/sender.py
+++ b/workers/sender.py
@@ -122,6 +122,9 @@ class Sender:
                     # session = HTMLSession()
                     self.logger.info("blocked by hermes, mail:{}".format(contact.mail))
                     return RequestResult.BLOCKED
+                elif response.status_code == 502:
+                    self.logger.info("proxy error, mail:{}".format(contact.mail))
+                    return RequestResult.PROXY_ERROR
                 return RequestResult.BLOCKED
         except Exception as Error:
             print(Error)