cURL error 28: Resolving timed out after 5001 milliseconds

Question

I use WordPress and I recently moved my site from the cpanel host to a Linux server with directadmin panel. Right after the transfer realized that customers have the following error when downloading via EDD plugin.

cURL error 28: Resolving timed out after 5001 milliseconds

I also got this error of w3_total_cache plugin.

Server informatin: Centos 6.8 (Final) cURL 7.54.0 (Final) directadmin

Answer 1

cURL error 28: Resolving timed out after 5001 milliseconds means DNS resolving failed.

so just change the DNS server list in /etc/resolv.conf.

or maybe we can bind the hostname and ip address in /etc/hosts.

this image shows the demo.

Answer 2

As reported here: https://wordpress.org/support/topic/dropbox-upload-fails-with-curl-timeout-error/ You can apply this temporary fix to extend the HTTP request timeout:

add_filter( 'http_request_timeout', function( $timeout ) { return 60; });

Wordpress default is 5 seconds.