GuestJoy uses Amazon Web Services to send guest emails on behalf of the your property.
One of your property's email addresses has been set up to be used as the 'from' address in this service, but this can occasionally cause spam issues.
To address this, could you please add the following SPF entry to your DNS configuration:
Full documentation can be found here: https://docs.aws.amazon.com/ses/latest/DeveloperGuide/send-email-authentication-spf.html
Please get in touch if you any questions: email@example.com