From: Mark Wooding <mdw@distorted.org.uk>
Date: Tue, 26 Jun 2018 15:48:54 +0000 (+0100)
Subject: config.m4: Present a LetsEncrypt certificate to external clients.
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/exim-config/commitdiff_plain/8afec8982a03946c92b3bde00ac5776fed9bc197

config.m4: Present a LetsEncrypt certificate to external clients.
---

diff --git a/config.m4 b/config.m4
index db6b966..a9b30b8 100644
--- a/config.m4
+++ b/config.m4
@@ -80,7 +80,11 @@ DEFCONF(relay_clients, <m4_dnl
 )
 
 ## TLS certificate list.
-DEFCONF(certlist, CONF_sysconf_dir/server.certlist)
+DEFCONF(certlist,
+<:m4_ifelse(t, m4_ifelse(MODE, hub, nil, MODE, srv, nil, t),
+<:CONF_sysconf_dir/server.certlist:>,
+<:CONF_sysconf_dir/${if match_ip{$sender_host_address}{+trusted} \
+	{server}{letsencrypt}}.certlist:>):>)
 
 ## TLS-related settings.  We're assuming GNUTLS here, rather than OpenSSL.
 ## For local connections we are very strict.  For random clients, we try