Email authentication
The basics are in place but can be hardened.
Authorizes which servers may send mail for the domain
SPF is published and within limits.
v=spf1 include:spf.protection.outlook.com include:21368018.spf02.hubspotemail.net -allCryptographically signs outgoing mail (best-effort selector probe)
DKIM key published for 1 known selector.
Tells receivers what to do with mail that fails SPF and DKIM
DMARC is published but not fully enforcing.
v=DMARC1; p=none; sp=quarantine; pct=75; adkim=r; aspf=r; rua=mailto:[email protected],mailto:[email protected]Enforces TLS for inbound mail and prevents downgrade attacks
No MTA-STS policy. Inbound mail can be delivered without TLS.
Receives reports about TLS delivery failures
TLS reporting is configured.
v=TLSRPTv1; rua=mailto:[email protected]Displays your verified brand logo in supporting inboxes
No BIMI record. No brand logo is published for inboxes.
Checks query live DNS over Cloudflare and the public MTA-STS policy endpoint. DKIM selectors cannot be listed from DNS, so DKIM detection probes common provider selectors only.