Improve description of dname-processing

diff --git a/docs/settings.rst b/docs/settings.rst
index ec125a76b0a9ef1ddc6999df42693427c4593848..f45208dae906106e5559ec7e42c06c5f9374178e 100644 (file)
--- a/docs/settings.rst
+++ b/docs/settings.rst
@@ -541,8 +541,11 @@ See :doc:`performance`.
 -  Boolean
 -  Default: no
 
-Synthesise CNAME records from DNAME records as required. This
-approximately doubles query load. **Do not combine with DNSSEC!**
+Turn on DNAME processing (DNAME substitution, CNAME synthesis). This
+approximately doubles query load.
+
+If this is turned off, DNAME records are treated as any other and served
+only when queried explicitly.
 
 .. _setting-dnssec-key-cache-ttl: