Answer:
It helps in preventing Domain name forgery
Step-by-step explanation:
Sometimes email from your domain can be forged by a impostor they'll arrange email headers and make it look it it is from the original domain, SPF (sender policy framework) is a technique that can stop this type of email forgery this is done by specifying the servers permitted to send out mails from a particular domain. If SPF is ignored then there's a likelihood of an email from your domain sent that you are never aware of.