liable to incompatible change.
-PRDR support
---------------------------------------------------------------
-
-Per-Recipient Data Reponse is an SMTP extension proposed by Eric Hall
-in a (now-expired) IETF draft from 2007. It's not hit mainstream
-use, but has apparently been implemented in the META1 MTA.
-
-There is mention at http://mail.aegee.org/intern/sendmail.html
-of a patch to sendmail "to make it PRDR capable".
-
- ref: http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt
-
-If Exim is built with EXPERIMENTAL_PRDR there is a new config
-boolean "prdr_enable" which controls whether PRDR is advertised
-as part of an EHLO response, a new "acl_data_smtp_prdr" ACL
-(called for each recipient, after data arrives but before the
-data ACL), and a new smtp transport option "hosts_try_prdr".
-
-PRDR may be used to support per-user content filtering. Without it
-one must defer any recipient after the first that has a different
-content-filter configuration. With PRDR, the RCPT-time check
-for this can be disabled when the MAIL-time $smtp_command included
-"PRDR". Any required difference in behaviour of the main DATA-time
-ACL should however depend on the PRDR-time ACL having run, as Exim
-will avoid doing so in some situations (eg. single-recipient mails).
-
-
-
OCSP Stapling support
--------------------------------------------------------------
on each connection, so a new file will be handled transparently on the
next connection.
-Exim will check for a valid next update timestamp in the OCSP proof;
-if not present, or if the proof has expired, it will be ignored.
+Under OpenSSL Exim will check for a valid next update timestamp in the
+OCSP proof; if not present, or if the proof has expired, it will be
+ignored.
-Also, given EXPERIMENTAL_OCSP, the smtp transport gains
-a "hosts_require_ocsp" option; a host-list for which an OCSP Stapling
-is requested and required for the connection to proceed. The host(s)
-should also be in "hosts_require_tls", and "tls_verify_certificates"
-configured for the transport.
+Also, given EXPERIMENTAL_OCSP, the smtp transport gains two options:
+- "hosts_require_ocsp"; a host-list for which an OCSP Stapling
+is requested and required for the connection to proceed. The default
+value is empty.
+- "hosts_request_ocsp"; a host-list for which (additionally) an OCSP
+Stapling is requested (but not necessarily verified). The default
+value is "*" meaning that requests are made unless configured
+otherwise.
+
+The host(s) should also be in "hosts_require_tls", and
+"tls_verify_certificates" configured for the transport.
For the client to be able to verify the stapled OCSP the server must
also supply, in its stapled information, any intermediate
Exim now has Experimental "Proxy Protocol" support. It was built on
specifications from:
http://haproxy.1wt.eu/download/1.5/doc/proxy-protocol.txt
+Above URL revised May 2014 to change version 2 spec:
+http://git.1wt.eu/web?p=haproxy.git;a=commitdiff;h=afb768340c9d7e50d8e
The purpose of this function is so that an application load balancer,
such as HAProxy, can sit in front of several Exim servers and Exim
+Certificate name checking
+--------------------------------------------------------------
+The X509 certificates used for TLS are supposed be verified
+that they are owned by the expected host. The coding of TLS
+support to date has not made these checks.
+
+If built with EXPERIMENTAL_CERTNAMES defined, code is
+included to do so, and a new smtp transport option
+"tls_verify_cert_hostname" supported which takes a list of
+names for which the checks must be made. The host must
+also be in "tls_verify_hosts".
+
+Both Subject and Subject-Alternate-Name certificate fields
+are supported, as are wildcard certificates (limited to
+a single wildcard being the initial component of a 3-or-more
+component FQDN).
+
+
+
--------------------------------------------------------------
End of file
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