I'm having an issue with getting an email form to send on my live server (Centos 7). It works locally perfectly, and when logged into my server as a superuser (root) I can send a test email from the command line and it arrives to my inbox (and a remote inbox not on the server) just fine. I cannot however get the form to submit through the browser.
I'm guessing it's a permissions issue, and I've read the guide on fixing permissions but I'm not entirely sure what I should be doing to resolve it. I've checked and Apache is running as nobody:nobody, whilst my Grav site is running under the virtual host account name pinsite:pinsite.
Who/what do I need to give permission to?