AWS SES: SPF shows none or NEUTRAL on email headers

I recently setup my SES account to send email from my domain. I created and verified my domain identity adding the required records:

1. DomainKeys Identified Mail (DKIM)
2. Custom MAIL FROM domain

Status for both sections show green "Successful". I did add the MX and TXT records under my domain DNS zone configuration in cPanel.

1. TXT aws.example.com "v=spf1 include:amazonses.com ~all"
2. MX 10 feedback-smtp.us-east-1.amazonses.com

(example.com is replaced by my actual domain of course) I do not use Amazon route 53.. whatever that is but maybe it is worth to mention.

I am able to send test emails successfully from the Amazon SES > Configuration: Verified identities >mydomain.com section.

But when i check the headers on the received emails. The SPF record shows "none". Gmail for example shows DKIM: PASS DMARC: PASS SPF: NEUTRAL with IP xx.xx.xx.xx (amazon SES sending IP addres)

When i change records on my cPanel, propagation happens immediately. I have waited 48 HS and SPF still shows none. The email tests i am sending to gmail seem to pass the checks and they land on the inbox, but with hotmail they are going to spam.

"Received-SPF: None (protection.outlook.com: aws.mydomain.com does not designate permitted sender hosts) " My domain is clean, never sent bulk mail nor it is listed on any spam lists.

Is there anyway to fix this? Thank you