File dovecot-2.3.0-better_ssl_defaults.patch of Package dovecot23.15100
Index: dovecot-2.3.2/doc/example-config/conf.d/10-ssl.conf
===================================================================
--- dovecot-2.3.2.orig/doc/example-config/conf.d/10-ssl.conf
+++ dovecot-2.3.2/doc/example-config/conf.d/10-ssl.conf
@@ -9,8 +9,8 @@
# dropping root privileges, so keep the key file unreadable by anyone but
# root. Included doc/mkcert.sh can be used to easily generate self-signed
# certificate, just make sure to update the domains in dovecot-openssl.cnf
-ssl_cert = </etc/ssl/private/dovecot.crt
-ssl_key = </etc/ssl/private/dovecot.pem
+#ssl_cert = </etc/ssl/private/dovecot.crt
+#ssl_key = </etc/ssl/private/dovecot.pem
# If key file is password protected, give the password here. Alternatively
# give it when starting dovecot with -p parameter. Since this file is often
@@ -57,6 +57,7 @@ ssl_key = </etc/ssl/private/dovecot.pem
#ssl_cipher_list = ALL:!kRSA:!SRP:!kDHd:!DSS:!aNULL:!eNULL:!EXPORT:!DES:!3DES:!MD5:!PSK:!RC4:!ADH:!LOW@STRENGTH
# To disable non-EC DH, use:
#ssl_cipher_list = ALL:!DH:!kRSA:!SRP:!kDHd:!DSS:!aNULL:!eNULL:!EXPORT:!DES:!3DES:!MD5:!PSK:!RC4:!ADH:!LOW@STRENGTH
+ssl_cipher_list = ALL:!aNULL:!eNULL:!EXPORT:!DES:!3DES:!MD5:!PSK:!RC4:!ADH:!LOW@STRENGTH
# Colon separated list of elliptic curves to use. Empty value (the default)
# means use the defaults from the SSL library. P-521:P-384:P-256 would be an
@@ -65,6 +66,7 @@ ssl_key = </etc/ssl/private/dovecot.pem
# Prefer the server's order of ciphers over client's.
#ssl_prefer_server_ciphers = no
+ssl_prefer_server_ciphers = yes
# SSL crypto device to use, for valid values run "openssl engine"
#ssl_crypto_device =
@@ -73,3 +75,4 @@ ssl_key = </etc/ssl/private/dovecot.pem
# compression - Enable compression.
# no_ticket - Disable SSL session tickets.
#ssl_options =
+ssl_options = no_compression
Index: dovecot-2.3.2/src/lib-master/master-service-ssl-settings.c
===================================================================
--- dovecot-2.3.2.orig/src/lib-master/master-service-ssl-settings.c
+++ dovecot-2.3.2/src/lib-master/master-service-ssl-settings.c
@@ -59,7 +59,7 @@ static const struct master_service_ssl_s
.ssl_client_cert = "",
.ssl_client_key = "",
.ssl_dh = "",
- .ssl_cipher_list = "ALL:!kRSA:!SRP:!kDHd:!DSS:!aNULL:!eNULL:!EXPORT:!DES:!3DES:!MD5:!PSK:!RC4:!ADH:!LOW@STRENGTH",
+ .ssl_cipher_list = "ALL:!LOW:!SSLv2:!EXP:!aNULL:!aNULL:!eNULL:!EXPORT:!DES:!3DES:!MD5:!PSK:!RC4:!ADH:!LOW@STRENGTH",
.ssl_curve_list = "",
.ssl_min_protocol = "TLSv1",
.ssl_cert_username_field = "commonName",