diff --git a/cmdeploy/src/cmdeploy/postfix/lmtp_header_cleanup b/cmdeploy/src/cmdeploy/postfix/lmtp_header_cleanup
index 85f4b7a2..1f21b41e 100644
--- a/cmdeploy/src/cmdeploy/postfix/lmtp_header_cleanup
+++ b/cmdeploy/src/cmdeploy/postfix/lmtp_header_cleanup
@@ -1,2 +1,4 @@
-/^DKIM-Signature:/            IGNORE
-/^Authentication-Results:/            IGNORE
+/^From:/            DUNNO
+/^Message-Id:/      DUNNO
+/^Chat-Is-Post-Message:/      DUNNO
+/.*/                IGNORE