diff -ruN spampd-2.61-v/spampd.pl spampd-2.61/spampd.pl
--- spampd-2.61-v/spampd.pl	2021-08-07 06:01:37.000000000 +1000
+++ spampd-2.61/spampd.pl	2021-08-13 03:48:34.527166029 +1000
@@ -761,6 +761,7 @@
 
   # Set misc. options based on other options.
   $srv_p->{setsid}= 0 if !$srv_p->{background};
+  $srv_p->{pid_file} = undef if !$srv_p->{background};
   $sa_p->{home_dir_for_helpers} = $sa_p->{userstate_dir};
   $sa_p->{username} = $srv_p->{user};
 }