Mail domain report: sparktoro.com

SPF

pass

SPF record published

Found

Record: v=spf1 include:servers.mcsv.net include:_spf.google.com -all
DNS lookups: 2 of 10
Void lookups: 0 of 2

Checks

✓ No deprecated ptr mechanism #1

No ptr mechanism found in SPF record.
✓ 2 of 10 DNS lookups #2

SPF record needs 2 DNS lookups (limit is 10).
✓ Ends with -all #3

SPF record properly uses -all to restrict unauthorized senders.
✓ Record published #6

SPF record exists for this domain.
✓ Single record #16

Exactly one SPF record is published.
✓ Valid syntax #25

All SPF mechanisms and modifiers are valid.
✓ No void lookups #26

All include/redirect targets exist.
✓ No overly broad IP ranges #27

All ip4/ip6 ranges are narrow enough.

DMARC

warn

p=reject (_dmarc.sparktoro.com)

Found

Record: v=DMARC1; p=reject;
Found at: _dmarc.sparktoro.com

Tag	Value	Meaning
v	DMARC1	Version
p	reject	Policy

Checks

✓ Policy: reject #4

DMARC policy is set to 'reject', which provides the strongest protection against email spoofing.
✓ Record published #5

DMARC record exists for this domain.
✓ Valid syntax #17

DMARC record syntax is valid.
✓ Applies to 100% of mail #18

DMARC policy applies to all failing mail.
!

No aggregate reports (rua)

DMARC record has no rua tag, so you receive no aggregate reports about who sends mail as your domain. Add rua=mailto:...

#19
✓ Subdomain policy: reject #20

Subdomains are covered by policy 'reject'.

DKIM

warn

Selectors: k1, google

Found

Selectors: k1, google
_domainkey: NOERROR

Selector	Key	Flags
k1	RSA 1024 bits
google	RSA 2048 bits

Checks

✓ Keys found: k1, google #7

DKIM keys found for this domain with selectors: k1, google
!

1024-bit DKIM key

1024-bit RSA keys are the minimum and are considered weak today: k1 (1024 bits). Rotate to a 2048-bit key.

#23
✓ No problematic flags #24

No keys in test mode, revoked, or limited to SHA-1.

DNSSEC

pass

Signed, DS published at parent

Found

DNSKEY records: Yes (2)
DS at parent: Yes
Algorithms: ECDSAP256SHA256 (13)
Key tags: 2371, 34505
Signatures valid until: 6 December 2026, 16:40 UTC

Checks

✓ Signed, DS published at parent #8

DNSSEC is enabled for this domain (DNSKEY and DS present), providing additional security for DNS lookups.
✓ Signatures valid until 2026-12-06 #21

DNSKEY signatures are valid until 2026-12-06T16:40:59Z.

MX

warn

6 mail servers

Found

Priority	Host	Records	Reverse DNS
1	aspmx.l.google.com	A 142.251.127.27 AAAA 2a00:1450:4001:c21::1a	lcfrai-in-f27.1e100.net ✓ lcfrai-in-f26.1e100.net ✓
5	alt1.aspmx.l.google.com	A 142.250.147.27 AAAA 2a00:1450:4025:c01::1b	rd-in-f27.1e100.net ✓ rd-in-f27.1e100.net ✓
5	alt2.aspmx.l.google.com	A 172.253.152.26 AAAA 2a00:1450:4010:c22::1a	yulpptr-in-f26.1e100.net ✓ yulpptr-in-f26.1e100.net ✓
10	alt3.aspmx.l.google.com	A 192.179.20.26 AAAA 2404:6800:4000:1027::1b	ncboms-in-f26.1e100.net ✓ ncboms-in-f27.1e100.net ✓
10	alt4.aspmx.l.google.com	A 192.178.158.26 AAAA 2404:6800:4013:813::1a	lcdels-in-f26.1e100.net ✓ lcdels-in-f26.1e100.net ✓
15	qz6mbhn7onypmvtu7bcoikvtavlsdff7vraowv2gkicbf6vlyarq.mx-verification.google.com	(does not resolve)

Checks

✓ 6 MX records #9

Found 6 MX records for this domain.
!

Hosts without IP addresses

The following MX hosts could not be resolved to IP addresses: qz6mbhn7onypmvtu7bcoikvtavlsdff7vraowv2gkicbf6vlyarq.mx-verification.google.com

#10
!

Hosts without IPv6

The following MX hosts could not be resolved to IPv6 addresses: qz6mbhn7onypmvtu7bcoikvtavlsdff7vraowv2gkicbf6vlyarq.mx-verification.google.com

#11
✓ Redundant MX hosts #12

Found 6 MX records, which provides redundancy for email delivery.
!

More than 5 MX records

Found 6 MX records, which is more than the recommended maximum of 5. Too many MX records may indicate a misconfiguration.

#13
✓ No localhost targets #14

No MX records pointing to localhost found.
✓ No private IP addresses #15

No MX records resolving to private IP addresses found.
✓ No CNAME targets #22

No MX records point to a CNAME.
✓ Reverse DNS confirmed #30

All 10 MX addresss have a PTR record that resolves back to them.

TLS

warn

MTA-STS testing · TLS-RPT · DANE on 0 of 6 MX hosts

Found

MTA-STS record: v=STSv1; id=20250915
Policy URL: https://mta-sts.sparktoro.com/.well-known/mta-sts.txt
Mode: testing
Allowed MX: aspmx.l.google.com, alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, qz6mbhn7onypmvtu7bcoikvtavlsdff7vraowv2gkicbf6vlyarq.mx-verification.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com
Max age: 604800 seconds
TLS-RPT record: v=TLSRPTv1; rua=mailto:smtp-tls-reports@sparktoro.com

DANE (TLSA records)

MX host	TLSA	DNSSEC
aspmx.l.google.com	none	-
alt1.aspmx.l.google.com	none	-
alt2.aspmx.l.google.com	none	-
alt3.aspmx.l.google.com	none	-
alt4.aspmx.l.google.com	none	-
qz6mbhn7onypmvtu7bcoikvtavlsdff7vraowv2gkicbf6vlyarq.mx-verification.google.com	none	-

Checks

✓ Record published #32

MTA-STS record found with id 20250915.
!

Policy in testing mode

With mode: testing, senders only report TLS problems (via TLS-RPT) and still deliver without TLS. Switch to mode: enforce once reports are clean.

#33
✓ All MX hosts covered #34

Every MX host matches an mx: line of the MTA-STS policy.
✓ Reports enabled #35

TLS reports are sent to: mailto:smtp-tls-reports@sparktoro.com
i

Not used

No MX host publishes TLSA records. DANE lets senders verify your mail server's certificate through DNSSEC; it requires DNSSEC on the MX host's zone.

#36

BIMI

warn

https://sparktoro.com/img/social-s-bimi.svg

Found

Record: v=BIMI1; l=https://sparktoro.com/img/social-s-bimi.svg
Found at: default._bimi.sparktoro.com
Logo: https://sparktoro.com/img/social-s-bimi.svg

Checks

!

No certificate (a=)

The logo is published without a Verified Mark Certificate. Gmail and Apple Mail only show BIMI logos with a VMC or CMC; Yahoo shows it without one.

#38
✓ DMARC meets BIMI requirements #39

DMARC is enforced on all mail, as BIMI requires.