Mail domain report: stellarinfo.com

SPF

pass

SPF record published

Found

Record: v=spf1 ip4:122.186.89.17/28 ip4:14.140.162.32/27 ip4:103.227.92.0/24 ip4:209.222.82.252 ip4:182.95.173.6/30 include:amazonses.com include:spf.zoho.com include:one.zoho.com include:spf.ess.barracudanetworks.com ~all
DNS lookups: 7 of 10
Void lookups: 0 of 2

Checks

✓ No deprecated ptr mechanism #1

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

SPF record needs 7 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

fail

p=none (_dmarc.stellarinfo.com)

Found

Record: v=DMARC1; p=none;
Found at: _dmarc.stellarinfo.com

Tag	Value	Meaning
v	DMARC1	Version
p	none	Policy

Checks

✗

Policy: none (monitoring only)

DMARC policy is set to 'none', which only monitors but doesn't protect against spoofing. Consider upgrading to 'quarantine' or ideally 'reject'.

#4
✓ Record published #5

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

DMARC record syntax is valid.
!

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

DKIM

pass

Selectors: dkim

Found

Selectors: dkim
_domainkey: NOERROR

Selector	Key	Flags
dkim	RSA 2048 bits

Checks

✓ Keys found: dkim #7

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

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

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

DNSSEC

warn

Not signed

Found

DNSKEY records: No (0)
DS at parent: No

Checks

!

Not enabled

DNSSEC is not enabled for this domain. Consider enabling DNSSEC to protect against DNS spoofing attacks.

#8

MX

warn

2 mail servers

Found

Priority	Host	Records	Reverse DNS
0	d313849a.ess.barracudanetworks.com	A 209.222.82.252 A 209.222.82.253 A 209.222.82.255	mail.ess.barracuda.com ✓ mail.ess.barracuda.com ✓ mail.ess.barracuda.com ✓
10	d313849b.ess.barracudanetworks.com	A 209.222.82.255 A 209.222.82.253 A 209.222.82.252	mail.ess.barracuda.com ✓ mail.ess.barracuda.com ✓ mail.ess.barracuda.com ✓

Checks

✓ 2 MX records #9

Found 2 MX records for this domain.
✓ All hosts resolve #10

All MX records resolve to valid IP addresses.
!

Hosts without IPv6

The following MX hosts could not be resolved to IPv6 addresses: d313849a.ess.barracudanetworks.com, d313849b.ess.barracudanetworks.com

#11
✓ Redundant MX hosts #12

Found 2 MX records, which provides redundancy for email delivery.
✓ At most 5 MX records #13

Found 2 MX records, which is within the recommended range (1-5).
✓ 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 6 MX addresss have a PTR record that resolves back to them.

TLS

info

MTA-STS enforce · TLS-RPT · DANE on 0 of 2 MX hosts

Found

MTA-STS record: v=STSv1; id=20260127
Policy URL: https://mta-sts.stellarinfo.com/.well-known/mta-sts.txt
Mode: enforce
Allowed MX: d313849a.ess.barracudanetworks.com, d313849b.ess.barracudanetworks.com
Max age: 1209600 seconds
TLS-RPT record: v=TLSRPTv1; rua=mailto:tlsrpt@stellarinfo.com

DANE (TLSA records)

MX host	TLSA	DNSSEC
d313849a.ess.barracudanetworks.com	none	-
d313849b.ess.barracudanetworks.com	none	-

Checks

✓ Record published #32

MTA-STS record found with id 20260127.
✓ Policy enforced #33

The MTA-STS policy is enforced and cached for 336h0m0s.
✓ 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:tlsrpt@stellarinfo.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

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