Random text when running behind a proxy

[emisand]

Hello,

I am having a very strange problem with vbulletin.

My web server is running with apache2 as backend and nginx as frontend working as a reverse proxy.

When I setted all up, everything was working fine, but then I discovered that some threads were not working because an encoding problem.
I fixed that disabling mod_deflate in apache2.

Now I can see those threads, but a new problem appeared.

At every page of the forum, at the very beginning of the html code appears a random text like this ones: 7db07, 221ac
It changes every time the page is reloaded.

If I disable the proxy and run apache2 directly that random text dissapears, when I re-enable nginx it comes back.

It also happens if I am without nginx but using a proxy to connect to internet.

Then I suppose it's a problem with vbulletin when it handles a proxy.

This ONLY happens with vbulletin, the other sites I host at that server don't have that problem.

Any ideas?

[emisand]

Ok, I have solved this problem by myself.

Solution:
vBulletin Options -> Cookies and HTTP Header Options -> Add Standard HTTP Headers -> Set to NO

I had that option setted to Yes, changed it to No and the problem was solved.