Update TLS default to current recommendation.

diff --git a/exim4.conf b/exim4.conf
index 7ac49447e52d23a1bfe0ab94c8fa39f333e54952..1fb49f38b58396526c169636ed694c39d35ed703 100644 (file)
--- a/exim4.conf
+++ b/exim4.conf
@@ -171,9 +171,9 @@ tls_advertise_hosts =
 # tls_on_connect_ports = 465
 
 # sane defaults
 # tls_on_connect_ports = 465
 
 # sane defaults

-# https://wiki.mozilla.org/Security/Server_Side_TLS#Intermediate_compatibility_.28default.29
-# tls_require_ciphers = ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES256-SHA:ECDHE-ECDSA-DES-CBC3-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:DES-CBC3-SHA:!DSS
-# openssl_options = +no_sslv2 +no_sslv3 +no_compression
+# https://ssl-config.mozilla.org/#server=exim&version=4.93&config=intermediate&openssl=1.1.1k&guideline=5.6
+# tls_require_ciphers = ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384
+# openssl_options = +no_sslv2 +no_sslv3 +no_tlsv1 +no_tlsv1_1 +no_compression

 
 # Specify the domain you want to be added to all unqualified addresses
 # here. An unqualified address is one that does not contain an "@" character
 
 # Specify the domain you want to be added to all unqualified addresses
 # here. An unqualified address is one that does not contain an "@" character