diff --git a/conf/nginx-alldomains.conf b/conf/nginx-alldomains.conf
index 995745e4..16c30106 100644
--- a/conf/nginx-alldomains.conf
+++ b/conf/nginx-alldomains.conf
@@ -36,6 +36,7 @@
 		fastcgi_split_path_info ^/mail(/.*)()$;
 		fastcgi_index index.php;
 		fastcgi_param SCRIPT_FILENAME /usr/local/lib/roundcubemail/$fastcgi_script_name;
+		fastcgi_param HTTP_PROXY  "";
 		fastcgi_pass php-fpm;
 
 		# Outgoing mail also goes through this endpoint, so increase the maximum
@@ -48,6 +49,7 @@
 		include /etc/nginx/fastcgi_params;
 		fastcgi_param SCRIPT_FILENAME /usr/local/lib/z-push/index.php;
 		fastcgi_param PHP_VALUE "include_path=.:/usr/share/php:/usr/share/pear:/usr/share/awl/inc";
+		fastcgi_param HTTP_PROXY  "";
 		fastcgi_read_timeout 630;
 		fastcgi_pass php-fpm;
 
@@ -59,6 +61,7 @@
 		include fastcgi_params;
 		fastcgi_param SCRIPT_FILENAME /usr/local/lib/z-push/autodiscover/autodiscover.php;
 		fastcgi_param PHP_VALUE "include_path=.:/usr/share/php:/usr/share/pear:/usr/share/awl/inc";
+		fastcgi_param HTTP_PROXY  "";
 		fastcgi_pass php-fpm;
 	}