reCAPTCHA and whitelist by domain proxy

[Hodor]

We keep our employees behind a squid proxy using a domain whitelist configuration.  We take payments on behalf of several clients who use reCAPTCHA in their payment systems.  No matter what I do, I cannot seem to get the right domains whitelisted or added to the exception list in the GPO that configures the proxy on the workstations.  My Google-fu seems weak in this area, is there a list of domains to allow safe passage to someplace in the documentation?

[Julian Mallett]

I've just had a look at what requests both reCAPTCHA 1 and 2 make. Requests go through:

https://www.google.com/recaptcha/...
https://www.gstatic.com/recaptcha/....
https://fonts.gstatic.com/...
https://apis.google.com/...

I think that's it. Hope it helps.

[Essejc]

Is there an update on this? My proxy settings are preventing the Captcha image to show up