I've setup a Wordpress installation that works fine, but for some reason I cannot access it from my office. I've flushed my DNS and reset the office router/modem, and showed Linode support my hosts file, which they say is setup correctly. When I run curl on the domain, I may get a different output each time.

$ curl -s joejalbert.com | fgrep '<title>'
<title>Welcome to nginx!</title>

then literally 1 second later:

$ curl -s joejalbert.com | fgrep '<title>'
<title>joejalbert.com | Just another WordPress sitejoejalbert.com | Just another WordPress site</title>


fwiw, yesterday I was able to access the WP site via Firefox, but not Chrome or Safari. Today I cannot access it at all from my location. This is clearly an issue that is specific to me, as I can access the site from any other location or through a proxy. I have absolutely no idea what could be causing it as I've cleared my cache in each browser, flushed DNS on my machine, and reset my router. Any insight at all would be greatly appreciated. Thanks!

I see this:

Performance optimized by W3 Total Cache.

So I would try disabling that.

I get your WordPress page from my computer at home.
I get the nginx welcome page from another linode.

Your domain name resolves to both an IPv4 address and an IPv6 address.

So: Did you configure nginx to listen at both IPv4 and IPv6?

WordPress:

wget -4 -q -O - http://joejalbert.com

nginx welcome page:

wget -6 -q -O - http://joejalbert.com

It was indeed an issue w/ IPv6. I got it to work by adding

listen [::]:80 ipv6only=off;

to the server block in my site's config file. Thank you sanvila for taking the time to help me out!

How do I access my server config file to add that code?

I am using webuzo + apache on ubuntu 14.04

I am a complete beginner when it comes to all this server stuff so please explain in detail.