diff --git a/krebs/3modules/exim.nix b/krebs/3modules/exim.nix
index 0044f5b32..cfcbbc438 100644
--- a/krebs/3modules/exim.nix
+++ b/krebs/3modules/exim.nix
@@ -42,6 +42,10 @@ in {
         exim_group = ${cfg.group.name}
         exim_path = /run/wrappers/bin/exim
         spool_directory = ${cfg.user.home}
+
+        # https://lists.exim.org/lurker/message/20171125.034842.d1d75cac.en.html
+        chunking_advertise_hosts =
+
         ${cfg.config}
       '';
       systemPackages = [ pkgs.exim ];
diff --git a/tv/2configs/urlwatch.nix b/tv/2configs/urlwatch.nix
index 515f8996f..a35254345 100644
--- a/tv/2configs/urlwatch.nix
+++ b/tv/2configs/urlwatch.nix
@@ -52,6 +52,8 @@ with import <stockholm/lib>;
       # <stockholm/tv/2configs/xserver/xserver.conf.nix>
       # is derived from `configFile` in:
       https://raw.githubusercontent.com/NixOS/nixpkgs/master/nixos/modules/services/x11/xserver.nix
+
+      https://www.rabbitmq.com/changelog.html
     ];
     hooksFile = toFile "hooks.py" ''
       import subprocess