-# For now just check that what should be working syntax does not cause us to fall over.
-# Be careful with envelope-domains used for testcases, as real DNS lookups will be done.
+# The libspf2 object stack is built with an exim-specific DNS lookup base object,
+# so the testsuite intercept to fakedns works. Be careful of names and addresses
+# used, as nonhandled lookups are passed on to real DNS.