wilroffreitsma.nl

01Overview 02DNS 03WHOIS 04Subdomains 05Email 06TLS

Checking SPF, DKIM, and DMARC

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digga is open source under AGPL 3.0.

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Checking SPF, DKIM, and DMARC

Email authentication

The basics are in place but can be hardened.

3Pass
2Warning
0Fail
1Not set

SPF

Warning

Authorizes which servers may send mail for the domain

SPF is published but could be tightened.

Policy: none
DNS lookups: 2 / 10

No all mechanism: the record has no default policy for unlisted senders.
Uses 2 of 10 allowed DNS lookups.

v=spf1 redirect=d339254.spf.dns.ks0.cx

DKIM

Pass

Cryptographically signs outgoing mail (best-effort selector probe)

DKIM key published for 8 known selectors.

Selectors: selector1, selector2, s1, s2, k1, mail, fm1, fm2

Found a DKIM key at selector1._domainkey.wilroffreitsma.nl
Found a DKIM key at selector2._domainkey.wilroffreitsma.nl
Found a DKIM key at s1._domainkey.wilroffreitsma.nl
Found a DKIM key at s2._domainkey.wilroffreitsma.nl
Found a DKIM key at k1._domainkey.wilroffreitsma.nl
Found a DKIM key at mail._domainkey.wilroffreitsma.nl
Found a DKIM key at fm1._domainkey.wilroffreitsma.nl
Found a DKIM key at fm2._domainkey.wilroffreitsma.nl

DMARC

Pass

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

DMARC is enforced.

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

Policy p=quarantine: failing mail is sent to spam.
Aggregate reports (rua) are configured.

v=DMARC1; p=quarantine; sp=quarantine; rua=mailto:[email protected]; adkim=r; aspf=r;

MTA-STS

Warning

Enforces TLS for inbound mail and prevents downgrade attacks

MTA-STS is published but not enforcing.

The DNS record exists but the policy file could not be read.

v=STSv1; id=20211201000000Z;

TLS-RPT

Not set

Receives reports about TLS delivery failures

No TLS-RPT record. You get no reports about failed TLS delivery.

BIMI

Pass

Displays your verified brand logo in supporting inboxes

BIMI is published.

Logo: https://www.wilroffreitsma.nl/img/wrlogo.svg

A logo (l=) is published.

v=BIMI1; l=https://www.wilroffreitsma.nl/img/wrlogo.svg;a=;

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.