postfix/dovecot: disable tls-level compression

dovecot/templates/conf.d/10-ssl.conf.j2

@@ -81,4 +81,4 @@ ssl_prefer_server_ciphers = {{ 'yes' if dovecot_tls_prefer_server_ciphers else '
 
 # SSL extra options. Currently supported options are:
 #   no_compression - Disable compression.
-#ssl_options =
+ssl_options = no_compression

postfix/templates/main.cf.j2

@@ -76,6 +76,7 @@ tls_medium_cipherlist = {{ postfix_tls_medium_cipherlist }}
 {% if postfix_tls_dh_file %}
 smtpd_tls_dh1024_param_file = /etc/postfix/dh.pem
 {% endif %}
+tls_ssl_options = NO_COMPRESSION
 {% endif %}
 
 alias_maps = cdb:/etc/aliases