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46/ 100

Coles Group

colesgroup.com.au · 🇦🇺 AU · consumer-staples

Scan week: 2026-03-23

  • Coles Group scores 46/100 and receives a grade of D in the Email Security Observatory.
  • This score is 4 points above the global average of 42/100, placing Coles Group among the better-protected companies.
  • Coles Group ranks #799 out of 1601 companies globally in the email security observatory.
  • The score is unchanged from last week.
  • Outbound email security - covering DMARC, SPF, DKIM and BIMI - scores 65/100 (C).
  • Inbound email protection - covering MX, MTA-STS, DANE and TLS-RPT - scores 40/100 (D).
  • DNS security (DNSSEC) scores 0/100 (F).
  • 5 recommendations have been identified to improve Coles Group's email security posture.
  • Score history spans 4 weeks, enabling week-over-week tracking of email authentication progress.

Outbound

50%
C
65/ 100
dmarc
36/40A
spf
24/30B
dkim
0/25F
bimi
5/5A

Inbound

35%
D
40/ 100
mx
40/40A
mta-sts
0/30F
dane
0/15F
tls-rpt
0/15F

DNS Security

15%
F
0/ 100
dnssec
0/100F

Rankings

global

#799 / 1601

country AU

#103 / 190

index asx-200

#103 / 193

sector consumer-staples

#48 / 119

Score history

46
03-23
46
03-16
46
03-09
46
03-02

Recommendations

Highdkim

No DKIM key detected for this domain

Mediumspf

Switch to -all (hardfail) for strict SPF enforcement

Mediummta-sts

Deploy MTA-STS to enforce TLS for inbound email

Lowtls-rpt

Add a TLS-RPT record to receive TLS failure reports

Lowdnssec

Enable DNSSEC for your domain to improve DNS security

Understanding the company audit

Each company in the Observatory is analyzed weekly for email authentication standards. The audit provides a comprehensive view of the company's email security posture.

What this page shows:

  • Total score - A score out of 100 reflecting overall email security maturity
  • Letter grade - From A+ (excellent) to F (significant gaps)
  • Per-standard analysis - Individual scores for SPF, DKIM, DMARC, BIMI, MTA-STS, DANE/TLSA and DNSSEC
  • Recommendations - Prioritized steps to improve the score

Standards evaluated

  1. SPF - Sender Policy Framework prevents unauthorized servers from sending email on behalf of the domain
  2. DKIM - DomainKeys Identified Mail ensures emails are signed and unaltered during transit
  3. DMARC - Domain-based Message Authentication, Reporting and Conformance ties SPF and DKIM together with a policy
  4. BIMI - Brand Indicators for Message Identification displays the brand logo in supporting email clients
  5. MTA-STS - Mail Transfer Agent Strict Transport Security enforces TLS encryption for inbound email
  6. DNSSEC - Domain Name System Security Extensions prevent DNS spoofing attacks

FAQ - Frequently asked questions

Q: How is the score calculated?

A: Points are awarded for each standard based on configuration quality, totaling up to 100.


Q: What do the grades mean?

A: A+ is excellent (90-100), F indicates significant gaps (below 50).


PagePurpose
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StatisticsCross-index and cross-sector comparison
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