Mail domain report: whistleblowersoftware.com

SPF

pass

SPF record published

Found

Record: v=spf1 include:9214205.spf03.hubspotemail.net include:_spf.google.com include:amazonses.com include:email.chargebee.com ~all
DNS lookups: 5 of 10
Void lookups: 0 of 2

Checks

✓ No deprecated ptr mechanism #1

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

SPF record needs 5 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

pass

p=reject (_dmarc.whistleblowersoftware.com)

Found

Record: v=DMARC1; p=reject; rua=mailto:7d0b0e14f8@rua.easydmarc.eu; ruf=mailto:7d0b0e14f8@ruf.easydmarc.eu;
Found at: _dmarc.whistleblowersoftware.com
External report address: mailto:7d0b0e14f8@rua.easydmarc.eu (authorized)
External report address: mailto:7d0b0e14f8@ruf.easydmarc.eu (authorized)

Tag	Value	Meaning
v	DMARC1	Version
p	reject	Policy
rua	mailto:7d0b0e14f8@rua.easydmarc.eu	Aggregate report addresses
ruf	mailto:7d0b0e14f8@ruf.easydmarc.eu	Failure report addresses

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.
✓ Aggregate reports enabled #19

Aggregate reports are sent to: mailto:7d0b0e14f8@rua.easydmarc.eu
✓ Subdomain policy: reject #20

Subdomains are covered by policy 'reject'.
✓ External report addresses authorized #29

Report addresses in other domains have published their authorization.

DKIM

pass

Selectors: google

Found

Selectors: google
_domainkey: NOERROR

Selector	Key	Flags
google	RSA 2048 bits

Checks

✓ Keys found: google #7

DKIM keys found for this domain with selectors: google
✓ Strong keys #23

DKIM keys are strong enough: google: RSA 2048 bits.
✓ No problematic flags #24

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

DNSSEC

warn

Signed, DS published at parent

Found

DNSKEY records: Yes (3)
DS at parent: Yes
Algorithms: ECDSAP256SHA256 (13)
Key tags: 29242, 64029, 18166
Signatures valid until: 22 October 2026, 18:00 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 expire in 6h0m0s

DNSKEY signatures expire at 2026-10-22T18:00:00Z (in 6h0m0s). Check that re-signing works.

#21

MX

warn

6 mail servers

Found

Priority	Host	Records	Reverse DNS
1	aspmx.l.google.com	A 142.251.127.26 AAAA 2a00:1450:4001:c21::1b	lcfrai-in-f26.1e100.net ✓ lcfrai-in-f27.1e100.net ✓
5	alt1.aspmx.l.google.com	A 142.250.147.27 AAAA 2a00:1450:4025:c01::1a	rd-in-f27.1e100.net ✓ rd-in-f26.1e100.net ✓
5	alt2.aspmx.l.google.com	A 172.253.152.27 AAAA 2a00:1450:4010:c22::1a	yulpptr-in-f27.1e100.net ✓ yulpptr-in-f26.1e100.net ✓
10	alt3.aspmx.l.google.com	A 192.179.20.27 AAAA 2404:6800:4000:1027::1a	ncboms-in-f27.1e100.net ✓ ncboms-in-f26.1e100.net ✓
10	alt4.aspmx.l.google.com	A 192.178.158.26 AAAA 2404:6800:4013:813::1b	lcdels-in-f26.1e100.net ✓ lcdels-in-f27.1e100.net ✓
15	dx5gffdeukgyftz3t3yzwzo4ifls5jl53eceahrxsjc66kvvv4fq.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: dx5gffdeukgyftz3t3yzwzo4ifls5jl53eceahrxsjc66kvvv4fq.mx-verification.google.com

#10
!

Hosts without IPv6

The following MX hosts could not be resolved to IPv6 addresses: dx5gffdeukgyftz3t3yzwzo4ifls5jl53eceahrxsjc66kvvv4fq.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

info

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

Found

MTA-STS record: v=STSv1; id=20251215T181643;
Policy URL: https://mta-sts.whistleblowersoftware.com/.well-known/mta-sts.txt
Mode: enforce
Allowed MX: dx5gffdeukgyftz3t3yzwzo4ifls5jl53eceahrxsjc66kvvv4fq.mx-verification.google.com, alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com
Max age: 604800 seconds
TLS-RPT record: v=TLSRPTv1; rua=mailto:7d0b0e14f8@tls.easydmarc.eu;

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	-
dx5gffdeukgyftz3t3yzwzo4ifls5jl53eceahrxsjc66kvvv4fq.mx-verification.google.com	none	-

Checks

✓ Record published #32

MTA-STS record found with id 20251215T181643.
✓ Policy enforced #33

The MTA-STS policy is enforced and cached for 168h0m0s.
✓ 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:7d0b0e14f8@tls.easydmarc.eu
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

info

No BIMI record

Checks

i

Not configured

BIMI shows your logo next to your mail in supporting mail clients. It requires DMARC enforcement.

#38