diff --git a/base/activation-manuelle/service-fail2ban.nix b/base/activation-manuelle/service-fail2ban.nix
index 1f26183..8f44b50 100644
--- a/base/activation-manuelle/service-fail2ban.nix
+++ b/base/activation-manuelle/service-fail2ban.nix
@@ -48,4 +48,5 @@ mkIf cfg.fail2ban {
 
   # https://github.com/NixOS/nixpkgs/issues/8437
   services.fail2ban.jails.ssh-iptables = "enabled = true";
+  services.fail2ban.jails.mail-whois-lines = "enabled = true";
 }