Question 1 of 100% Complete
Infrastructure Domain: SPF (Sender Policy Framework)
Is SPF configured on your domain DNS to define which mail servers are authorised to send email?
SPF specifies which IPs are allowed to send email for your domain, reducing the chances of your domain being used in scams.
Yes, fully configured with strict '~all' or '-all' flags
SPF exists but has errors (e.g. duplicate records or more than 10 DNS lookups)
No SPF record is set up, or it uses the permissive '+all' flag