SPF is very important, and it MUST be fixed. It is an email authentication method that helps to verify the message is being sent from an authorized server. Setting up SPF helps to prevent spoofing, spam, and improve message deliverability.
DKIM it adds a signature that gets verified by the receiving server to ensure the messages are not forged or changed during transit.
DMARC it tells the receiving server to checks SPF and DKIM to verify the emails are coming from the authorized servers.
With this service of SPF DKIM DMARC set up we will set it up and validate your records, so that your email is safer and your email marketing campaigns will work better.