diff --git a/src/freedombone-base-email b/src/freedombone-base-email
index 45b33ec9..a2b2b5aa 100755
--- a/src/freedombone-base-email
+++ b/src/freedombone-base-email
@@ -1664,6 +1664,8 @@ function refresh_gpg_keys {
 }
 
 function prevent_mail_process_overrun {
+    # This prevents any large buildup of exim processes, perhaps due to
+    # Tor unavailability, from disabling the server
     { echo '#!/bin/bash';
       echo "exim_ctr=\$(pgrep \"exim4\" | wc -l)";
       echo "if [ \"\$exim_ctr\" -gt 5 ]; then";