You must also have DKIM present (not disabled), and you very likely
want to have SPF enabled.
+It is possible to build as a dynamic-load module: set also SUPPORT_ARC=2.
+
Verification
--
Logging protocol unusual states
---------------------------------------------------------------
An extra log_selector, "protocol_detail" has been added in the default build.
-The name may change in future, hence the Experimenal status.
+The name may change in future, hence the Experimental status.
Currrently the only effect is to enable logging, under TLS,
of a TCP RST received directly after a QUIT (in server mode).
-Limits ESMTP extension
----------------------------------------------------------------
-Per https://datatracker.ietf.org/doc/html/draft-freed-smtp-limits-01
-(as of 2023/08/04, version -05 has been published. It does not seems
-to be substantively different.)
-
-If compiled with EXPERIMENTAL_ESMTP_LIMITS=yes :-
-
-As a server, Exim will advertise, in the EHLO response, the limit for RCPT
-commands set by the recipients_max main-section config option (if it is set),
-and the limit for MAIL commands set by the smtp_accept_max_per_connection
-option.
-
-Note that as of writing, smtp_accept_max_per_connection is expanded but
-recipients_max is not.
-
-A new main-section option "limits_advertise_hosts" controls whether
-the limits are advertised; the default for the option is "*".
-
-As a client, Exim will:
-
- - note an advertised MAILMAX; the lower of the value given and the
- value from the transport connection_max_messages option is used.
-
- - note an advertised RCPTMAX; the lower of the
- value given and the value from the transport max_rcpt option is used.
- Parallisation of transactions is not done if due to a RCPTMAX, unlike
- max_rcpt.
-
- - note an advertised RCPTDOMAINMAX, and behave as if the transport
- multi_domains option was set to false. The value advertised is ignored.
-
-Values advertised are only noted for TLS connections and ones for which
-the server does not advertise TLS support.
-
-
-
XCLIENT proxy support
---------------------------------------------------------------
Per https://www.postfix.org/XCLIENT_README.html
$proxy_external_address, $proxy_external_port have the proxy "outside" values
$sender_host_address, $sender_host_port have the remot client values
+
+
+
--------------------------------------------------------------
End of file
--------------------------------------------------------------