diff --git a/core/rspamd/conf/milter_headers.conf b/core/rspamd/conf/milter_headers.conf
index cb680cfa..7da200df 100644
--- a/core/rspamd/conf/milter_headers.conf
+++ b/core/rspamd/conf/milter_headers.conf
@@ -5,6 +5,9 @@ skip_authenticated = false;
 use = ["x-spamd-bar", "x-spam-level", "x-virus", "authentication-results"];
 
 routines {
+  authentication-results {
+    add_smtp_user = false;
+  }
   x-virus {
     symbols = ["CLAM_VIRUS", "FPROT_VIRUS", "JUST_EICAR"];
   }
diff --git a/towncrier/newsfragments/1638.fix b/towncrier/newsfragments/1638.fix
new file mode 100644
index 00000000..9a87e41e
--- /dev/null
+++ b/towncrier/newsfragments/1638.fix
@@ -0,0 +1 @@
+Hide the login of the user in sent emails