Documentation

Enabling Direct Https – Server to Server for WPEngine

If you’d like to enable Direct HTTPS – server to server on your ePDQ back-office account, and if your site is hosted on WPEngine, you’ll have experienced error 403s logs on requests is being processed between ePDQ and WPEngine.

Why does this happen?

WPEngine has a server block in the default Nginx config, 403s requests from specific bot user agents, including Mozilla/3.0 (compatible; Indy Library).

How can this be resolved?

To get around this server-level block, WPEngine needs to allow both Mozilla/3 & Indy Library separately, rather than in one request like such:

set $ua1 0;
set $ua2 0;
if ($http_user_agent ~* “Mozilla/3”) { set $ua1 “1”;}
if ($http_user_agent ~* “Indy Library”) {set $ua2 “1”;}
set $uacomb “$ua1:$ua2”;
if ($uacomb = “1:1”) {break;}

You can reach out to the WPEngine support team and have them apply this request.

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