Testsuite: for TFO testcases manipulate the system state

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

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index 8086f0b467de863778633950128f8e953df09c1c..4a8e1d06e39b4f5945d6e23bd634c13984fd729f 100644 (file)
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -23799,6 +23799,8 @@ of the message. Its value must not be zero. See also &%final_timeout%&.
 .option dkim_canon smtp string&!! unset
 .option dkim_strict smtp string&!! unset
 .option dkim_sign_headers smtp string&!! unset
+.option dkim_hash smtp string&!! sha256
+.option dkim_identity smtp string&!! unset
 DKIM signing options.  For details see section &<<SECDKIMSIGN>>&.
 
 
@@ -36040,6 +36042,7 @@ the following table:
 &`SNI `&        server name indication from TLS client hello
 &`ST  `&        shadow transport name
 &`T   `&        on &`<=`& lines: message subject (topic)
+&`TFO `&        connection took advantage of TCP Fast Open
 &`    `&        on &`=>`& &`**`& and &`==`& lines: transport name
 &`U   `&        local user or RFC 1413 identity
 &`X   `&        TLS cipher suite
@@ -38524,13 +38527,15 @@ while expanding the remaining signing options.
 .wen
 If it is empty after expansion, DKIM signing is not done.
 
-.option dkim_selector smtp string&!! unset
+.option dkim_selector smtp string list&!! unset
 This sets the key selector string.
-You can use the &%$dkim_domain%& expansion variable to look up a matching selector.
-The result is put in the expansion
+.new
+After expansion, which can use &$dkim_domain$&, this can be a list.
+Each element in turn is put in the expansion
 variable &%$dkim_selector%& which may be used in the &%dkim_private_key%&
 option along with &%$dkim_domain%&.
-If the option is empty after expansion, DKIM signing is not done.
+If the option is empty after expansion, DKIM signing is not done for this domain.
+.wen
 
 .option dkim_private_key smtp string&!! unset
 This sets the private key to use.
@@ -38549,6 +38554,19 @@ is set.
 .endlist
 If the option is empty after expansion, DKIM signing is not done.
 
+.new
+.option dkim_hash smtp string&!! sha256
+Can be set alternatively to &"sha1"& to use an alternate hash
+method.  Note that sha1 is now condidered insecure, and deprecated.
+
+.option dkim_identity smtp string&!! unset
+If set after expansion, the value is used to set an "i=" tag in
+the signing header.  The DKIM standards restrict the permissible
+syntax of this optional tag to a mail address, with possibly-empty
+local part, an @, and a domain identical to or subdomain of the "d="
+tag value.  Note that Exim does not check the value.
+.wen
+
 .option dkim_canon smtp string&!! unset
 This option sets the canonicalization method used when signing a message.
 The DKIM RFC currently supports two methods: "simple" and "relaxed".
@@ -38577,7 +38595,7 @@ Verification of DKIM signatures in SMTP incoming email is implemented via the
 syntactically(!) correct signature in the incoming message.
 A missing ACL definition defaults to accept.
 If any ACL call does not accept, the message is not accepted.
-If a cutthrough delivery was in progress for the message it is
+If a cutthrough delivery was in progress for the message, that is
 summarily dropped (having wasted the transmission effort).
 
 To evaluate the signature in the ACL a large number of expansion variables