OpenSSL: full-chain OCSP stapling. Bug 1466

[users/jgh/exim.git] / doc / doc-docbook / spec.xfpt

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index d7e8fe0c422bbe64e2f00eb4e19a0723eb1e0af7..6cfe0bf63095a0599ea712241cad7d7bb3a3e47b 100644 (file)
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -16459,6 +16459,8 @@ and from which pipeline early-connection (before MAIL) SMTP
 commands are acceptable.
 When used, the pipelining saves on roundtrip times.
 
+See also the &%hosts_pipe_connect%& smtp transport option.
+
 Currently the option name &"X_PIPE_CONNECT"& is used.
 .wen
 
@@ -17736,7 +17738,14 @@ larger prime than requested.
 The value of this option is expanded and indicates the source of DH parameters
 to be used by Exim.
 
-&*Note: The Exim Maintainers strongly recommend using a filename with site-generated
+.new
+This option is ignored for GnuTLS version 3.6.0 and later.
+The library manages parameter negotiation internally.
+.wen
+
+&*Note: The Exim Maintainers strongly recommend,
+for other TLS library versions,
+using a filename with site-generated
 local DH parameters*&, which has been supported across all versions of Exim.  The
 other specific constants available are a fallback so that even when
 "unconfigured", Exim can offer Perfect Forward Secrecy in older ciphersuites in TLS.
@@ -17832,18 +17841,29 @@ Certificate Authority.
 
 Usable for GnuTLS 3.4.4 or 3.3.17 or OpenSSL 1.1.0 (or later).
 
-For GnuTLS 3.5.6 or later the expanded value of this option can be a list
+.new
+For OpenSSL 1.1.0 or later, and
+.wen
+for GnuTLS 3.5.6 or later the expanded value of this option can be a list
 of files, to match a list given for the &%tls_certificate%& option.
 The ordering of the two lists must match.
 
 .new
 The file(s) should be in DER format,
-except for GnuTLS 3.6.3 or later when an optional filetype prefix
-can be used.  The prefix must be one of "DER" or "PEM", followed by
+except for GnuTLS 3.6.3 or later
+or for OpenSSL,
+when an optional filetype prefix can be used.
+The prefix must be one of "DER" or "PEM", followed by
 a single space.  If one is used it sets the format for subsequent
 files in the list; the initial format is DER.
-When a PEM format file is used it may contain multiple proofs,
-for multiple certificate chain element proofs under TLS1.3.
+If multiple proofs are wanted, for multiple chain elements
+(this only works under TLS1.3)
+they must be coded as a combined OCSP response.
+
+Although GnuTLS will accept PEM files with multiple separate
+PEM blobs (ie. separate OCSP responses), it sends them in the
+TLS Certificate record interleaved with the certificates of the chain;
+although a GnuTLS client is happy with that, an OpenSSL client is not.
 .wen
 
 .option tls_on_connect_ports main "string list" unset
@@ -24730,6 +24750,8 @@ When used, the pipelining saves on roundtrip times.
 It also turns SMTP into a client-first protocol
 so combines well with TCP Fast Open.
 
+See also the &%pipelining_connect_advertise_hosts%& main option.
+
 Note:
 When the facility is used, the transport &%helo_data%& option
 will be expanded before the &$sending_ip_address$& variable
@@ -41029,7 +41051,9 @@ Events have names which correspond to the point in process at which they fire.
 The name is placed in the variable &$event_name$& and the event action
 expansion must check this, as it will be called for every possible event type.
 
+.new
 The current list of events is:
+.wen
 .display
 &`dane:fail              after    transport  `& per connection
 &`msg:complete           after    main       `& per message
@@ -41043,6 +41067,7 @@ The current list of events is:
 &`tcp:close              after    transport  `& per connection
 &`tls:cert               before   both       `& per certificate in verification chain
 &`smtp:connect           after    transport  `& per connection
+&`smtp:ehlo              after    transport  `& per connection
 .endd
 New event types may be added in future.
 
@@ -41069,6 +41094,7 @@ with the event type:
 &`msg:host:defer       `& error string
 &`tls:cert             `& verification chain depth
 &`smtp:connect         `& smtp banner
+&`smtp:ehlo            `& smtp ehlo response
 .endd
 
 The :defer events populate one extra variable: &$event_defer_errno$&.