diff --git a/roles/mailman/templates/mailman.cfg.j2 b/roles/mailman/templates/mailman.cfg.j2
index bd483f01cd..5a99d48658 100644
--- a/roles/mailman/templates/mailman.cfg.j2
+++ b/roles/mailman/templates/mailman.cfg.j2
@@ -73,6 +73,8 @@ jump_chain: discard
 smtp_port: 587
 # Remove DKIM signatures in the email headers.
 remove_dkim_headers: yes
+# Don't process old stale bounces
+verp_probes: yes
 
 
 [language.en]