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authorJeremy Harris <jgh146exb@wizmail.org>2019-01-13 17:11:18 +0000
committerJeremy Harris <jgh146exb@wizmail.org>2019-01-13 17:14:57 +0000
commita9ea625141da4f2829506717fbb6abbcbf2fea0c (patch)
treea8f68d8f63bf685381da01068151e85ff8f71c2e /doc
parentb220576b3ba5396af6b3e0f45739f269079f8fc5 (diff)
Docs: add warning on OCSP must-staple certs vs. client-cert use.
Diffstat (limited to 'doc')
-rw-r--r--doc/doc-docbook/spec.xfpt9
1 files changed, 9 insertions, 0 deletions
diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index 7d4dfbbe7..d21a71857 100644
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -28202,6 +28202,15 @@ checks are made: that the host name (the one in the DNS A record)
is valid for the certificate.
The option defaults to always checking.
+.new
+Do not use a client certificate that contains an "OCSP Must-Staple" extension.
+TLS 1.2 and below does not support client-side OCSP stapling, and
+(as of writing) the TLS libraries do not provide for it even with
+TLS 1.3.
+Be careful when using the same certificate for server- and
+client-certificate for this reason.
+.wen
+
The &(smtp)& transport has two OCSP-related options:
&%hosts_require_ocsp%&; a host-list for which a Certificate Status
is requested and required for the connection to proceed. The default