DKIM: support specifying alternate-identity tag for signing. Bug 2170

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

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index 44a274b98f641b644753b752c41f3e4564a52a35..4a8e1d06e39b4f5945d6e23bd634c13984fd729f 100644 (file)
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -23800,6 +23800,7 @@ of the message. Its value must not be zero. See also &%final_timeout%&.
 .option dkim_strict smtp string&!! unset
 .option dkim_sign_headers smtp string&!! unset
 .option dkim_hash smtp string&!! sha256
 .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>>&.
 
 
 DKIM signing options.  For details see section &<<SECDKIMSIGN>>&.
 
 


@@ -38553,6 +38554,19 @@ is set.
 .endlist
 If the option is empty after expansion, DKIM signing is not done.
 
 .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".
 .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".


@@ -38572,12 +38586,6 @@ list of header names. Headers with these names will be included in the message
 signature.
 When unspecified, the header names recommended in RFC4871 will be used.
 
 signature.
 When unspecified, the header names recommended in RFC4871 will be used.
 

-.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.
-.wen
-

 
 .section "Verifying DKIM signatures in incoming mail" "SECID514"
 .cindex "DKIM" "verification"
 
 .section "Verifying DKIM signatures in incoming mail" "SECID514"
 .cindex "DKIM" "verification"