ljmac on "[Plugin: Wordfence Security] Call to Wordfence API to resolve IPs failed"

I've just installed Wordfence for the first time and I am getting exact same this error too:

Starting wp_remote_post() test
wp_remote_post() test to noc1.wordfence.com failed! Response was: 404 Not Found
This likely means that your hosting provider is blocking requests to noc1.wordfence.com or has set up a proxy that is not behaving itself.
This additional info may help you diagnose the issue. The response headers we received were:
server => nginx/1.4.6 (Ubuntu)
date => Thu, 04 Sep 2014 07:21:59 GMT
content-type => text/html
content-length => 177
connection => close

Starting wp_remote_post() test
wp_remote_post() test to noc1.wordfence.com failed! Response was: 404 Not Found
This likely means that your hosting provider is blocking requests to noc1.wordfence.com or has set up a proxy that is not behaving itself.
This additional info may help you diagnose the issue. The response headers we received were:
server => nginx/1.4.6 (Ubuntu)
date => Thu, 04 Sep 2014 07:22:00 GMT
content-type => text/html
content-length => 177
connection => close

I can see no reason for this, and nor can my ISP. Besides, if it was being blocked, shouldn't it be a 403 error, not 404?

Everything else appears to be working fine however, except for one thing that I'll open another ticket for.