403 error on post request

Hello Everyone.
I get a 403 response from Cloudflare when i submit a form (post request) with a file larger than 8MB.
Php post_max_size and upload_max size are set to 64MB so this is not the issue.
The same form in another domain (which is not on Cloudflare) on the same server works fine. So i am guessing that this is a Cloudflare issue.

Any ideas on this?

Have you really verified the 403 comes from Cloudflare?

Whats the URL?

Hello,

https://www.delta.gr/testupload/upload.php

Thank you

Again, have you verified that?

The way it seems that error does not come from Cloudflare.

Hey Sandro,

I am not completely sure on how to 100% verify that this is coming from Cloudflare. I cloned the form in another domain outside Cloudflare and it is working fine. How do you know 100% that this is not coming from Cloudflare?

Thank you for your time.

That is a clear message from your server

image

You need to fix that there.

Ok i will investigate more. Thank you

My real big problem is that Apache does not log the 403 error at all thus i cannot investigate the issue.
I am a bit stuck

In that case I’d take this to StackExchange.

Will do, thank you

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