> Do not use --reuse if you have scanned with SA, but have configured that scanner to run with -L, or you have disabled common network tests or SPF. This is because it relies on the presence of the X-Spam-Status line to pick up hits on those rules, and currently cannot detect those conditions.
Perhaps the page should omit --reuse by default since it is more likely
that someone reading this page doesn't have all the add-on network tests
I personally don't have them all, and lots of my corpus is lacking