SPF records is set up for all your custom domains.
Why This Matters
SPF (Sender Policy Framework) records authorize which mail servers can send email on behalf of your domain. Without them, attackers can spoof your domain in phishing or spam campaigns, damaging your brand reputation and reducing email deliverability. Configuring SPF for every custom domain is a basic but essential step in preventing email impersonation.
What Aether365 Checks
Aether365 verifies that each custom domain associated with your Microsoft 365 tenant has a valid SPF record published in DNS. This check appears in the Aether365 dashboard under the Microsoft 365 category and flags any domain missing or misconfigured SPF.