See &<<SECTtlssni>>& for discussion of when this option might be re-expanded.
+A forced expansion failure or setting to an empty string is equivalent to
+being unset.
+
.option tls_verify_hosts main "host list&!!" unset
.cindex "TLS" "client certificate verification"
option is not working properly, &%debug_print%& could be used to output the
variables it references. A newline is added to the text if it does not end with
one.
-The variables &$transport_name$ and &$router_name$& contain the name of the
+The variables &$transport_name$& and &$router_name$& contain the name of the
transport and the router that called it.