Email security for comcast.net

SPF

Pass

Authorizes which servers may send mail for the domain

SPF is published and within limits.

Policy: ~all
DNS lookups: 7 / 10

Ends in ~all (softfail): unauthorized senders are marked, not rejected.
Uses 7 of 10 allowed DNS lookups.

v=spf1 ip4:96.103.146.48/28 ip4:96.102.19.32/28 ip4:96.102.200.0/28 include:_spfv6.comcast.net include:_spf.mdp.comcast.net include:_ipspf.yahoo.com ~all

DKIM

Not set

Cryptographically signs outgoing mail (best-effort selector probe)

No DKIM key found for common selectors.

Selectors probed: 32

DKIM selectors cannot be enumerated from DNS, so this only probes well-known selectors. A negative result is not proof that DKIM is missing.

DMARC

Pass

Tells receivers what to do with mail that fails SPF and DKIM

DMARC is enforced.

Policy: p=reject
Subdomains: sp=reject
Coverage: 100%

Policy p=reject: failing mail is rejected outright.
Aggregate reports (rua) are configured.

v=DMARC1;p=reject;sp=reject;rua=mailto:[email protected]

MTA-STS

Pass

Enforces TLS for inbound mail and prevents downgrade attacks

MTA-STS is enforcing TLS.

Mode: enforce
Max age: 2592000s

Policy mode is enforce: TLS is required for inbound mail.

v=STSv1; id=1667432290;

TLS-RPT

Pass

Receives reports about TLS delivery failures

TLS reporting is configured.

Reports to: mailto:[email protected]

TLS delivery failure reports are being collected.

v=TLSRPTv1;rua=mailto:[email protected];

BIMI

Not set

Displays your verified brand logo in supporting inboxes

No BIMI record. No brand logo is published for inboxes.