From 24cda181fb88542cf38db2beae5d0ddb37f59c5c Mon Sep 17 00:00:00 2001 From: Jeremy Harris Date: Sat, 25 Mar 2023 23:21:15 +0000 Subject: Experimental_XCLIENT. Bug 2702 --- doc/doc-txt/experimental-spec.txt | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) (limited to 'doc') diff --git a/doc/doc-txt/experimental-spec.txt b/doc/doc-txt/experimental-spec.txt index aac8ca77d..5bf00a7f1 100644 --- a/doc/doc-txt/experimental-spec.txt +++ b/doc/doc-txt/experimental-spec.txt @@ -662,6 +662,37 @@ 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 + +XCLIENT is an ESMTP extension supporting an inbound proxy. +The only client immplementation known is in Nginx +(https://nginx.org/en/docs/mail/ngx_mail_proxy_module.html) + +If compiled with EXPERIMENTAL_XCLIENT=yes :- + +As a server, Exim will advertise XCLIENT support (conditional on a new option +"hosts_xclient") and service XCLIENT commands with parameters + ADDR + NAME + PORT + LOGIN + DESTADDR + DESTPORT +A fresh HELO/EHLO is required after a succesful XCLIENT, and the usual +values are derived from that (making the HELO and PROTO paramemters redundant). + +An XCLIENT command must give both ADDR and PORT parameters if no previous +XCLIENT has succeeded in the SMTP session. + +After a success: + $proxy_session variable becomes "yes" + $proxy_local_address, $proxy_local_port have the proxy "inside" values + $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 -------------------------------------------------------------- -- cgit v1.2.1