EXPERIMENTAL_CERTNAMES: Hostlist for cert name checks should match host

[exim.git] / doc / doc-txt / experimental-spec.txt

diff --git a/doc/doc-txt/experimental-spec.txt b/doc/doc-txt/experimental-spec.txt
index 266e198914d9e8b35ca5b1f8b9b2a095724d7ec7..f6529c6e2343fef5db868178e6efa90d27e8187b 100644 (file)
--- a/doc/doc-txt/experimental-spec.txt
+++ b/doc/doc-txt/experimental-spec.txt
@@ -1154,14 +1154,17 @@ support to date has not made these checks.
 
 If built with EXPERIMENTAL_CERTNAMES defined, code is
 included to do so for server certificates, and a new smtp transport option
-"tls_verify_cert_hostnames" supported which takes a list of
-names for which the additional checks must be made.
+"tls_verify_cert_hostnames" supported which takes a hostlist
+which must match the target host for the additional checks must be made.
 The option currently defaults to empty, but this may change in
 the future.  "*" is probably a suitable value.
 Whether certificate verification is done at all, and the result of
 it failing, is stll under the control of "tls_verify_hosts" nad
 "tls_try_verify_hosts".
 
+The name being checked is that for the host, generally
+the result of an MX lookup.
+
 Both Subject and Subject-Alternate-Name certificate fields
 are supported, as are wildcard certificates (limited to
 a single wildcard being the initial component of a 3-or-more