diff --git a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-base-domain.conf.j2 b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-base-domain.conf.j2
index 3aff997db..44978dc40 100644
--- a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-base-domain.conf.j2
+++ b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-base-domain.conf.j2
@@ -45,7 +45,7 @@ server {
 		location /.well-known/acme-challenge {
 			{% if matrix_nginx_proxy_enabled %}
 				{# Use the embedded DNS resolver in Docker containers to discover the service #}
-				resolver 127.0.0.11 valid=5s;
+				resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 				set $backend "matrix-certbot:8080";
 				proxy_pass http://$backend;
 			{% else %}
diff --git a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-bot-buscarron.conf.j2 b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-bot-buscarron.conf.j2
index 0ce1473be..4f0fd4a8f 100644
--- a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-bot-buscarron.conf.j2
+++ b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-bot-buscarron.conf.j2
@@ -24,7 +24,7 @@
 	location / {
 		{% if matrix_nginx_proxy_enabled %}
 			{# Use the embedded DNS resolver in Docker containers to discover the service #}
-			resolver 127.0.0.11 valid=5s;
+			resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 			set $backend "matrix-bot-buscarron:8080";
 			proxy_pass http://$backend;
 		{% else %}
@@ -51,7 +51,7 @@ server {
 		location /.well-known/acme-challenge {
 			{% if matrix_nginx_proxy_enabled %}
 				{# Use the embedded DNS resolver in Docker containers to discover the service #}
-				resolver 127.0.0.11 valid=5s;
+				resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 				set $backend "matrix-certbot:8080";
 				proxy_pass http://$backend;
 			{% else %}
diff --git a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-bot-go-neb.conf.j2 b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-bot-go-neb.conf.j2
index e5589f555..a62ddfc81 100644
--- a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-bot-go-neb.conf.j2
+++ b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-bot-go-neb.conf.j2
@@ -18,7 +18,7 @@
 	location / {
 		{% if matrix_nginx_proxy_enabled %}
 			{# Use the embedded DNS resolver in Docker containers to discover the service #}
-			resolver 127.0.0.11 valid=5s;
+			resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 			set $backend "matrix-bot-go-neb:4050";
 			proxy_pass http://$backend;
 		{% else %}
@@ -44,7 +44,7 @@ server {
 		location /.well-known/acme-challenge {
 			{% if matrix_nginx_proxy_enabled %}
 				{# Use the embedded DNS resolver in Docker containers to discover the service #}
-				resolver 127.0.0.11 valid=5s;
+				resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 				set $backend "matrix-certbot:8080";
 				proxy_pass http://$backend;
 			{% else %}
diff --git a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-client-cinny.conf.j2 b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-client-cinny.conf.j2
index df66349fe..2ec6eb1ba 100644
--- a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-client-cinny.conf.j2
+++ b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-client-cinny.conf.j2
@@ -24,7 +24,7 @@
 	location / {
 		{% if matrix_nginx_proxy_enabled %}
 			{# Use the embedded DNS resolver in Docker containers to discover the service #}
-			resolver 127.0.0.11 valid=5s;
+			resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 			set $backend "matrix-client-cinny:8080";
 			proxy_pass http://$backend;
 		{% else %}
@@ -51,7 +51,7 @@ server {
 		location /.well-known/acme-challenge {
 			{% if matrix_nginx_proxy_enabled %}
 				{# Use the embedded DNS resolver in Docker containers to discover the service #}
-				resolver 127.0.0.11 valid=5s;
+				resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 				set $backend "matrix-certbot:8080";
 				proxy_pass http://$backend;
 			{% else %}
diff --git a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-client-element.conf.j2 b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-client-element.conf.j2
index dea91b212..0beeae52b 100644
--- a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-client-element.conf.j2
+++ b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-client-element.conf.j2
@@ -26,7 +26,7 @@
 	location / {
 		{% if matrix_nginx_proxy_enabled %}
 			{# Use the embedded DNS resolver in Docker containers to discover the service #}
-			resolver 127.0.0.11 valid=5s;
+			resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 			set $backend "matrix-client-element:8080";
 			proxy_pass http://$backend;
 		{% else %}
@@ -53,7 +53,7 @@ server {
 		location /.well-known/acme-challenge {
 			{% if matrix_nginx_proxy_enabled %}
 				{# Use the embedded DNS resolver in Docker containers to discover the service #}
-				resolver 127.0.0.11 valid=5s;
+				resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 				set $backend "matrix-certbot:8080";
 				proxy_pass http://$backend;
 			{% else %}
diff --git a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-client-hydrogen.conf.j2 b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-client-hydrogen.conf.j2
index e9428c557..7a2e9dfac 100644
--- a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-client-hydrogen.conf.j2
+++ b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-client-hydrogen.conf.j2
@@ -24,7 +24,7 @@
 	location / {
 		{% if matrix_nginx_proxy_enabled %}
 			{# Use the embedded DNS resolver in Docker containers to discover the service #}
-			resolver 127.0.0.11 valid=5s;
+			resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 			set $backend "matrix-client-hydrogen:8080";
 			proxy_pass http://$backend;
 		{% else %}
@@ -51,7 +51,7 @@ server {
 		location /.well-known/acme-challenge {
 			{% if matrix_nginx_proxy_enabled %}
 				{# Use the embedded DNS resolver in Docker containers to discover the service #}
-				resolver 127.0.0.11 valid=5s;
+				resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 				set $backend "matrix-certbot:8080";
 				proxy_pass http://$backend;
 			{% else %}
diff --git a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-conduit.conf.j2 b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-conduit.conf.j2
index 2106acc48..6e7aca793 100644
--- a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-conduit.conf.j2
+++ b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-conduit.conf.j2
@@ -28,7 +28,7 @@ server {
 	location / {
 		{% if matrix_nginx_proxy_enabled %}
 			{# Use the embedded DNS resolver in Docker containers to discover the service #}
-			resolver 127.0.0.11 valid=5s;
+			resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 			set $backend "{{ matrix_nginx_proxy_proxy_conduit_client_api_addr_with_container }}";
 			proxy_pass http://$backend;
 		{% else %}
@@ -59,7 +59,7 @@ server {
 	location / {
 		{% if matrix_nginx_proxy_enabled %}
 			{# Use the embedded DNS resolver in Docker containers to discover the service #}
-			resolver 127.0.0.11 valid=5s;
+			resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 			set $backend "{{ matrix_nginx_proxy_proxy_conduit_federation_api_addr_with_container }}";
 			proxy_pass http://$backend;
 		{% else %}
diff --git a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-dendrite.conf.j2 b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-dendrite.conf.j2
index 939156a31..10eccf373 100644
--- a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-dendrite.conf.j2
+++ b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-dendrite.conf.j2
@@ -28,7 +28,7 @@ server {
 	location / {
 		{% if matrix_nginx_proxy_enabled %}
 			{# Use the embedded DNS resolver in Docker containers to discover the service #}
-			resolver 127.0.0.11 valid=5s;
+			resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 			set $backend "{{ matrix_nginx_proxy_proxy_dendrite_client_api_addr_with_container }}";
 			proxy_pass http://$backend;
 		{% else %}
@@ -59,7 +59,7 @@ server {
 	location / {
 		{% if matrix_nginx_proxy_enabled %}
 			{# Use the embedded DNS resolver in Docker containers to discover the service #}
-			resolver 127.0.0.11 valid=5s;
+			resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 			set $backend "{{ matrix_nginx_proxy_proxy_dendrite_federation_api_addr_with_container }}";
 			proxy_pass http://$backend;
 		{% else %}
diff --git a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-dimension.conf.j2 b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-dimension.conf.j2
index 07347be62..730fc4c1d 100644
--- a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-dimension.conf.j2
+++ b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-dimension.conf.j2
@@ -21,7 +21,7 @@
 	location / {
 		{% if matrix_nginx_proxy_enabled %}
 			{# Use the embedded DNS resolver in Docker containers to discover the service #}
-			resolver 127.0.0.11 valid=5s;
+			resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 			set $backend "matrix-dimension:8184";
 			proxy_pass http://$backend;
 		{% else %}
@@ -47,7 +47,7 @@ server {
 		location /.well-known/acme-challenge {
 			{% if matrix_nginx_proxy_enabled %}
 				{# Use the embedded DNS resolver in Docker containers to discover the service #}
-				resolver 127.0.0.11 valid=5s;
+				resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 				set $backend "matrix-certbot:8080";
 				proxy_pass http://$backend;
 			{% else %}
diff --git a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-domain.conf.j2 b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-domain.conf.j2
index 2895ba14a..63d45bc63 100644
--- a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-domain.conf.j2
+++ b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-domain.conf.j2
@@ -62,7 +62,7 @@
 	location ^~ /_matrix/corporal {
 		{% if matrix_nginx_proxy_enabled %}
 			{# Use the embedded DNS resolver in Docker containers to discover the service #}
-			resolver 127.0.0.11 valid=5s;
+			resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 			set $backend "{{ matrix_nginx_proxy_proxy_matrix_corporal_api_addr_with_container }}";
 			proxy_pass http://$backend;
 		{% else %}
@@ -80,7 +80,7 @@
 	location ^~ /_matrix/identity {
 		{% if matrix_nginx_proxy_enabled %}
 			{# Use the embedded DNS resolver in Docker containers to discover the service #}
-			resolver 127.0.0.11 valid=5s;
+			resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 			set $backend "{{ matrix_nginx_proxy_proxy_matrix_identity_api_addr_with_container }}";
 			proxy_pass http://$backend;
 		{% else %}
@@ -98,7 +98,7 @@
 	location ^~ /_matrix/client/r0/user_directory/search {
 		{% if matrix_nginx_proxy_enabled %}
 			{# Use the embedded DNS resolver in Docker containers to discover the service #}
-			resolver 127.0.0.11 valid=5s;
+			resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 			set $backend "{{ matrix_nginx_proxy_proxy_matrix_user_directory_search_addr_with_container }}";
 			proxy_pass http://$backend;
 		{% else %}
@@ -115,7 +115,7 @@
 	location ~ ^/_matrix/client/r0/register/(email|msisdn)/requestToken$ {
 		{% if matrix_nginx_proxy_enabled %}
 			{# Use the embedded DNS resolver in Docker containers to discover the service #}
-			resolver 127.0.0.11 valid=5s;
+			resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 			set $backend "{{ matrix_nginx_proxy_proxy_matrix_3pid_registration_addr_with_container }}";
 			proxy_pass http://$backend;
 		{% else %}
@@ -140,7 +140,7 @@
 	location ~* ^({{ matrix_nginx_proxy_proxy_matrix_client_api_forwarded_location_prefix_regexes|join('|') }}) {
 		{% if matrix_nginx_proxy_enabled %}
 			{# Use the embedded DNS resolver in Docker containers to discover the service #}
-			resolver 127.0.0.11 valid=5s;
+			resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 			set $backend "{{ matrix_nginx_proxy_proxy_matrix_client_api_addr_with_container }}";
 			proxy_pass http://$backend;
 		{% else %}
@@ -185,7 +185,7 @@ server {
 		location /.well-known/acme-challenge {
 			{% if matrix_nginx_proxy_enabled %}
 				{# Use the embedded DNS resolver in Docker containers to discover the service #}
-				resolver 127.0.0.11 valid=5s;
+				resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 				set $backend "matrix-certbot:8080";
 				proxy_pass http://$backend;
 			{% else %}
@@ -288,7 +288,7 @@ server {
 	location / {
 		{% if matrix_nginx_proxy_enabled %}
 			{# Use the embedded DNS resolver in Docker containers to discover the service #}
-			resolver 127.0.0.11 valid=5s;
+			resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 			set $backend "{{ matrix_nginx_proxy_proxy_matrix_federation_api_addr_with_container }}";
 			proxy_pass http://$backend;
 		{% else %}
diff --git a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-grafana.conf.j2 b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-grafana.conf.j2
index def67f666..094180448 100644
--- a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-grafana.conf.j2
+++ b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-grafana.conf.j2
@@ -28,7 +28,7 @@
 	location / {
 		{% if matrix_nginx_proxy_enabled %}
 			{# Use the embedded DNS resolver in Docker containers to discover the service #}
-			resolver 127.0.0.11 valid=5s;
+			resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 			set $backend "matrix-grafana:3000";
 			proxy_pass http://$backend;
 		{% else %}
@@ -55,7 +55,7 @@ server {
 		location /.well-known/acme-challenge {
 			{% if matrix_nginx_proxy_enabled %}
 				{# Use the embedded DNS resolver in Docker containers to discover the service #}
-				resolver 127.0.0.11 valid=5s;
+				resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 				set $backend "matrix-certbot:8080";
 				proxy_pass http://$backend;
 			{% else %}
diff --git a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-jitsi.conf.j2 b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-jitsi.conf.j2
index 54b8ea436..aa4b6b446 100644
--- a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-jitsi.conf.j2
+++ b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-jitsi.conf.j2
@@ -21,7 +21,7 @@
 	location / {
 		{% if matrix_nginx_proxy_enabled %}
 			{# Use the embedded DNS resolver in Docker containers to discover the service #}
-			resolver 127.0.0.11 valid=5s;
+			resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 			set $backend "matrix-jitsi-web:80";
 			proxy_pass http://$backend;
 		{% else %}
@@ -36,7 +36,7 @@
 	# colibri (JVB) websockets
 	location ~ ^/colibri-ws/([a-zA-Z0-9-\.]+)/(.*) {
 		{% if matrix_nginx_proxy_enabled %}
-			resolver 127.0.0.11 valid=5s;
+			resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 			set $backend "matrix-jitsi-jvb:9090";
 			proxy_pass http://$backend;
 		{% else %}
@@ -57,7 +57,7 @@
 	# XMPP websocket
 	location = /xmpp-websocket {
 		{% if matrix_nginx_proxy_enabled %}
-			resolver 127.0.0.11 valid=5s;
+			resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 			set $backend {{ matrix_jitsi_xmpp_bosh_url_base }};
 			proxy_pass $backend/xmpp-websocket;
 		{% else %}
@@ -89,7 +89,7 @@ server {
 		location /.well-known/acme-challenge {
 			{% if matrix_nginx_proxy_enabled %}
 				{# Use the embedded DNS resolver in Docker containers to discover the service #}
-				resolver 127.0.0.11 valid=5s;
+				resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 				set $backend "matrix-certbot:8080";
 				proxy_pass http://$backend;
 			{% else %}
diff --git a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-ntfy.conf.j2 b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-ntfy.conf.j2
index ae100edac..fbae47e17 100644
--- a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-ntfy.conf.j2
+++ b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-ntfy.conf.j2
@@ -20,7 +20,7 @@
 	location / {
 		{% if matrix_nginx_proxy_enabled %}
 			{# Use the embedded DNS resolver in Docker containers to discover the service #}
-			resolver 127.0.0.11 valid=5s;
+			resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 			set $backend "matrix-ntfy:8080";
 			proxy_pass http://$backend;
 		{% else %}
@@ -49,7 +49,7 @@ server {
 		location /.well-known/acme-challenge {
 			{% if matrix_nginx_proxy_enabled %}
 				{# Use the embedded DNS resolver in Docker containers to discover the service #}
-				resolver 127.0.0.11 valid=5s;
+				resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 				set $backend "matrix-certbot:8080";
 				proxy_pass http://$backend;
 			{% else %}
diff --git a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-riot-web.conf.j2 b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-riot-web.conf.j2
index 5bcbeba5b..990269134 100644
--- a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-riot-web.conf.j2
+++ b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-riot-web.conf.j2
@@ -36,7 +36,7 @@ server {
 		location /.well-known/acme-challenge {
 			{% if matrix_nginx_proxy_enabled %}
 				{# Use the embedded DNS resolver in Docker containers to discover the service #}
-				resolver 127.0.0.11 valid=5s;
+				resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 				set $backend "matrix-certbot:8080";
 				proxy_pass http://$backend;
 			{% else %}
diff --git a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-sygnal.conf.j2 b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-sygnal.conf.j2
index 0f33c0a77..e3c6a461a 100644
--- a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-sygnal.conf.j2
+++ b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-sygnal.conf.j2
@@ -19,7 +19,7 @@
 	location / {
 		{% if matrix_nginx_proxy_enabled %}
 			{# Use the embedded DNS resolver in Docker containers to discover the service #}
-			resolver 127.0.0.11 valid=5s;
+			resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 			set $backend "matrix-sygnal:6000";
 			proxy_pass http://$backend;
 		{% else %}
@@ -46,7 +46,7 @@ server {
 		location /.well-known/acme-challenge {
 			{% if matrix_nginx_proxy_enabled %}
 				{# Use the embedded DNS resolver in Docker containers to discover the service #}
-				resolver 127.0.0.11 valid=5s;
+				resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 				set $backend "matrix-certbot:8080";
 				proxy_pass http://$backend;
 			{% else %}
diff --git a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-synapse.conf.j2 b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-synapse.conf.j2
index 1d6f2106a..da1893299 100644
--- a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-synapse.conf.j2
+++ b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-synapse.conf.j2
@@ -150,7 +150,7 @@ server {
 	location / {
 		{% if matrix_nginx_proxy_enabled %}
 			{# Use the embedded DNS resolver in Docker containers to discover the service #}
-			resolver 127.0.0.11 valid=5s;
+			resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 			set $backend "{{ matrix_nginx_proxy_proxy_synapse_client_api_addr_with_container }}";
 			proxy_pass http://$backend;
 		{% else %}
@@ -211,7 +211,7 @@ server {
 	location / {
 		{% if matrix_nginx_proxy_enabled %}
 			{# Use the embedded DNS resolver in Docker containers to discover the service #}
-			resolver 127.0.0.11 valid=5s;
+			resolver {{ matrix_nginx_proxy_http_level_resolver }} valid=5s;
 			set $backend "{{ matrix_nginx_proxy_proxy_synapse_federation_api_addr_with_container }}";
 			proxy_pass http://$backend;
 		{% else %}