X-Git-Url: https://git.exim.org/users/heiko/exim.git/blobdiff_plain/7ef88aa0c4c0608ee54ed2ff90b4b34c518d9bb5..5c329a4388e7113925109e093e8cbb12ddf6fa8b:/doc/doc-txt/experimental-spec.txt

diff --git a/doc/doc-txt/experimental-spec.txt b/doc/doc-txt/experimental-spec.txt
index e9a557aec..6e47b95c2 100644
--- a/doc/doc-txt/experimental-spec.txt
+++ b/doc/doc-txt/experimental-spec.txt
@@ -642,6 +642,9 @@ ARC support
 Specification: https://tools.ietf.org/html/draft-ietf-dmarc-arc-protocol-11
 Note that this is not an RFC yet, so may change.
 
+[RFC 8617 was published 2019/06.  Draft 11 was 2018/01.  A review of the
+changes has not yet been done]
+
 ARC is intended to support the utility of SPF and DKIM in the presence of
 intermediaries in the transmission path - forwarders and mailinglists -
 by establishing a cryptographically-signed chain in headers.
@@ -650,10 +653,18 @@ Normally one would only bother doing ARC-signing when functioning as
 an intermediary.  One might do verify for local destinations.
 
 ARC uses the notion of a "ADministrative Management Domain" (ADMD).
-Described in RFC 5598 (section 2.3), this is essentially the set of
-mail-handling systems that the mail transits.  A label should be chosen to
-identify the ADMD.  Messages should be ARC-verified on entry to the ADMD,
-and ARC-signed on exit from it.
+Described in RFC 5598 (section 2.3), this is essentially a set of
+mail-handling systems that mail transits that are all under the control
+of one organisation.  A label should be chosen to identify the ADMD.
+Messages should be ARC-verified on entry to the ADMD, and ARC-signed on exit
+from it.
+
+
+Building with ARC Support
+--
+Enable using EXPERIMENTAL_ARC=yes in your Local/Makefile.
+You must also have DKIM present (not disabled), and you very likely
+want to have SPF enabled.
 
 
 Verification
@@ -797,6 +808,36 @@ Issues:
    hosts_require_ocsp will fail
 
 
+
+Dovecot authenticator via inet socket
+------------------------------------
+If Dovecot is configured similar to :-
+
+service auth {
+...
+#SASL
+  inet_listener {
+    name = exim
+    port = 12345
+    ssl = yes
+  }
+...
+}
+
+then an Exim authenticator can be configured :-
+
+  dovecot-plain:
+    driver =		dovecot
+    public_name =	PLAIN
+    server_socket =	dovecot_server_name 12345
+    server_tls =	true
+    server_set_id =	$auth1
+
+If the server_socket does not start with a / it is taken as a hostname (or IP);
+and a whitespace-separated port number must be given.
+
+
+
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 End of file
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