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authorGuilhem Moulin <guilhem@fripost.org>2016-05-18 19:25:20 +0200
committerGuilhem Moulin <guilhem@fripost.org>2016-05-18 21:13:46 +0200
commit8fc53ecddfe875be30501a89fd24f226de7575d9 (patch)
tree7412dfd08ec407fbd57bfb15f9fef16244cd100f /roles/MX/templates/etc/postfix
parent00ef4cf0b280b6c9acefeae9065bec99540411aa (diff)
postfix: Update to recommended TLS settings.
Following Viktor Dukhovni's 2015-08-06 recommendation http://article.gmane.org/gmane.mail.postfix.user/251935 (We're using stronger ciphers and protocols in our own infrastructure.)
Diffstat (limited to 'roles/MX/templates/etc/postfix')
-rw-r--r--roles/MX/templates/etc/postfix/main.cf.j25
1 files changed, 4 insertions, 1 deletions
diff --git a/roles/MX/templates/etc/postfix/main.cf.j2 b/roles/MX/templates/etc/postfix/main.cf.j2
index 27214a1..af282aa 100644
--- a/roles/MX/templates/etc/postfix/main.cf.j2
+++ b/roles/MX/templates/etc/postfix/main.cf.j2
@@ -84,6 +84,8 @@ smtp_tls_security_level = none
smtp_bind_address = 127.0.0.1
{% else %}
smtp_tls_security_level = encrypt
+smtp_tls_ciphers = high
+smtp_tls_protocols = !SSLv2, !SSLv3, !TLSv1, !TLSv1.1
smtp_tls_exclude_ciphers = EXPORT, LOW, MEDIUM, aNULL, eNULL, DES, RC4, MD5
smtp_tls_cert_file = /etc/postfix/ssl/{{ ansible_fqdn }}.pem
smtp_tls_key_file = /etc/postfix/ssl/{{ ansible_fqdn }}.key
@@ -93,7 +95,8 @@ smtp_tls_fingerprint_digest = sha256
{% endif %}
smtpd_tls_security_level = may
-smtpd_tls_exclude_ciphers = EXPORT, LOW, MEDIUM, aNULL, eNULL, DES, RC4, MD5
+smtpd_tls_ciphers = medium
+smtpd_tls_protocols = !SSLv2, !SSLv3
smtpd_tls_cert_file = /etc/postfix/ssl/mx.fripost.org.pem
smtpd_tls_key_file = /etc/postfix/ssl/mx.fripost.org.key
smtpd_tls_dh1024_param_file = /etc/ssl/dhparams.pem