Email tester score its too low

I test my mail server with www.mail-tester.com and shows me this problems
RDNS_NONE   Delivered to internal network by a host with no rDNS
This may be a false-positive, please check the reverse DNS test below to confirm or not this issue

Similar message reported on Pyzor (http://pyzor.org)
Please test a real content, test Newsletters will always be flagged by Pyzor
Adjust your message or request whitelisting (http://public.pyzor.org/whitelist/)

SPF: HELO does not match SPF record (fail)
SPF failed: Please see http://www.openspf.org/Why?s=helo;id=cbox.biz;ip=109.104.205.30;r=mail-tester.com

You have more than one DKIM signature in your message.

Can you help me to fix this score?

1. The rDNS (reverse DNS) problem is because probably you are on a VPS and the rDNS/PTR record is not set.
If your VPS is on SolusVM, you need to go to Network tab in your SolusVM control panel and edit/save the rDNS record. Or you can ask the hosting provider to set the PTR record for you.

2. Only after that, you will have to setup the SPF and DKIM record from CWP -> Email -> DKIM Manager. Just select your domain, and check the "enable SPF", then "Add DKIM" and you're done.