Have nginx listen over ipv6

nginx/conf/nginx.conf

@@ -21,10 +21,12 @@ http {
 
     server {
       listen 80;
+      listen [::]:80;
 
       # TLS configuration
       {% if TLS and not TLS_ERROR %}
       listen 443 ssl;
+      listen [::]:443 ssl;
       include /etc/nginx/tls.conf;
       ssl_session_cache shared:SSLHTTP:50m;
       add_header Strict-Transport-Security max-age=15768000;
@@ -90,6 +92,7 @@ mail {
 
     server {
       listen 25;
+      listen [::]:25;
       {% if TLS and not TLS_ERROR %}
       starttls on;
       {% endif %}
@@ -100,6 +103,7 @@ mail {
     {% if not TLS_ERROR %}
     server {
       listen 143;
+      listen [::]:143;
       {% if TLS %}
       starttls only;
       {% endif %}
@@ -110,12 +114,14 @@ mail {
     {% if TLS %}
     server {
       listen 465 ssl;
+      listen [::]:465 ssl;
       protocol smtp;
       smtp_auth plain;
     }
 
     server {
-      listen 597;
+      listen 587;
+      listen [::]:587;
       starttls only;
       protocol smtp;
       smtp_auth plain;
@@ -123,6 +129,7 @@ mail {
 
     server {
       listen 993 ssl;
+      listen [::]:993 ssl;
       protocol imap;
       imap_auth plain;
     }