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🇩🇪 DAX 40 Email Security

Weekly audit of email security across 40 companies in the DAX 40.

Deutsche Börse · 40 companies analysed · Scan week: 2026-03-23

  • Companies listed in the DAX 40 score an average of 54/100 for email security this week.
  • 3% of DAX 40 companies achieve a grade of A+ or A in email authentication, while 35% receive a D or F.
  • The average score of 54 is 12 points above the global average of 42, indicating stronger-than-average email security practices.
  • 97.5% of DAX 40 companies have deployed DMARC email authentication, and 65% enforce a strict reject policy to block spoofed emails.
  • SPF record deployment stands at 90%, authorizing legitimate sending servers and helping prevent email spoofing.
  • 18% of companies have configured BIMI to display their verified brand logo in supported email clients.
  • 20% enforce TLS encryption for inbound email delivery via MTA-STS, protecting against downgrade attacks.
  • DNSSEC is enabled on 25% of DAX 40 domains, adding cryptographic validation to DNS queries.
  • Beiersdorf leads the DAX 40 with a top score of 90/100 (A).
  • Zalando has the lowest score at 19/100, indicating significant gaps in email security configuration.
  • Scores range from 19 to 90 with a median of 54, reflecting varied levels of email security maturity across the index.

Average score

54/ 100

DMARC reject

65%

BIMI configured

18%

MTA-STS enforce

20%

DNSSEC enabled

25%

0
A+
1
A
5
B
20
C
11
D
3
F

54

Average

54

Median

19

Min

90

Max

Company

Grade
1Beiersdorfbeiersdorf.com90A
2Freseniusfresenius.com81B
3Heidelberg Materialsheidelbergmaterials.com75B
4Münchener Rück (Munich Re)munichre.com73B
5Merck KGaAmerckgroup.com70B
6Commerzbankcommerzbank.com70B
7BASFbasf.com67-3C
8Henkelhenkel.com65C
9Sartoriussartorius.com64C
10Porsche AGporsche.com63C
11Siemenssiemens.com61C
12SAPsap.com60+2C
13Allianzallianz.com60C
14Covestrocovestro.com59C
15Airbusairbus.com58C
16MTU Aero Enginesmtu.de57C
17Deutsche Bankdb.com56+1C
18Brenntagbrenntag.com56C
19BMWbmwgroup.com55C
20Siemens Energysiemens-energy.com54C
21Porsche SEporsche-se.com54C
22Siemens Healthineerssiemens-healthineers.com53+1C
23Deutsche Börsedeutsche-boerse.com52C
24Qiagenqiagen.com52C
25RWErwe.com52C
26Adidasadidas-group.com51C
27Symrisesymrise.com49D
28Deutsche Post (DHL)dpdhl.com48D
29Daimler Truckdaimlertruck.com48D
30E.ONeon.com47-2D
31Deutsche Telekomtelekom.com46D
32Continentalcontinental.com45D
33Infineoninfineon.com45D
34Deutsche Lufthansalufthansagroup.com43D
35Mercedes-Benzmercedes-benz.com43D
36Hannover Rehannover-re.com40D
37Bayerbayer.com31D
38Vonoviavonovia.com29F
39Rheinmetallrheinmetall.com27F
40Zalandocorporate.zalando.com19+1F

Understanding index-level analysis

A stock index groups the largest companies in a market. Analyzing their email security provides a representative snapshot of how a country's or region's corporate sector protects against email-based threats.

What this page shows:

  • Average score - The mean email security score across all constituent companies
  • Grade distribution - How many companies fall into each grade bracket (A+ through F)
  • Company table - Individual scores, grades and key indicator status for each company
  • Sector breakdown - How different industries within the index compare

Key standards tracked

Each company is evaluated on:

  1. SPF - Is the sending policy properly configured? Does it use -all (hard fail)?
  2. DKIM - Are signing keys published and strong enough (2048-bit minimum)?
  3. DMARC - Is a policy in place? Is it set to quarantine or reject?
  4. BIMI - Is the brand logo published for inbox display?
  5. MTA-STS - Is inbound email transport encryption enforced?
  6. DNSSEC - Is the DNS zone signed to prevent spoofing?

FAQ - Frequently asked questions

Q: How are companies scored?

A: Each domain is analyzed for email authentication standards and awarded up to 100 points across three pillars.


Q: What does the grade distribution show?

A: The spread of scores from A+ to F, indicating overall index maturity.


Q: Can I compare indices?

A: Yes, via the Statistics page.


PagePurpose
Observatory DashboardOverall overview with key metrics
StatisticsCross-index and cross-sector comparison
Email Domain CheckAudit your own domain
DAX 40 - Email Security Scores