I am a newbie to linux and trying to make my server working on Redhat linux. I'm getting 500 Internal Server Error when I type in my domain name. I don't really know where to start looking for solutions. Any help will be appreciated.

System: Redhat Enterprise 6.4 Apache 2.2.15

I ran the command

sudo service httpd start

So, httpd is running.

Let me know if you need other informations.

Your claim that because you typed the right command therefore Apache is running seems dubious.

The error log is usually the best place to start. Check /var/log/httpd/error_log

Ok, I have two error logs in that folder.

error_log

[Wed Jul 30 14:44:01 2014] [notice] suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
[Wed Jul 30 14:44:01 2014] [notice] Digest: generating secret for digest authentication ...
[Wed Jul 30 14:44:01 2014] [notice] Digest: done
[Wed Jul 30 14:44:02 2014] [notice] Apache/2.2.15 (Unix) DAV/2 PHP/5.3.3 mod_ssl/2.2.15 OpenSSL/1.0.0-fips mod_wsgi/3.2 Python/2.6.6 mod_perl/2.0.4 Perl/v5.10.1 configured -- resuming normal operations
[Wed Jul 30 18:12:48 2014] [notice] caught SIGTERM, shutting down

ssl_error_log

[Wed Jul 30 14:44:01 2014] [warn] RSA server certificate is a CA certificate (BasicConstraints: CA == TRUE !?)
[Wed Jul 30 14:44:01 2014] [warn] RSA server certificate CommonName (CN) `rh64-40-template' does NOT match server name!?
[Wed Jul 30 14:44:02 2014] [warn] RSA server certificate is a CA certificate (BasicConstraints: CA == TRUE !?)
[Wed Jul 30 14:44:02 2014] [warn] RSA server certificate CommonName (CN) `rh64-40-template' does NOT match server name!?


The last line of error_log is because I stopped httpd.
I researched a little on certification issues and I don't think this will cause an internal server error.
Where should I look at next?

Most probably a site configuration problem, is it virtual host? Have .htaccess file in site root directory?

Ok, it worked on https://

I guess it WAS certification problem. I've decided to fix it after I deploy my website.

Thanks for the reply.