Swiss Steel Group

swisssteelgroup.com

Industry: Chemicals & materials
Headquarters: Luzern, Lucerne
Type: listed
Employees (approx.): 8,500
Checked on: 19 October 2026

45/100Grade C

Protection against forged senders: not protected

Points per criterion

MX 10 / 10
SPF 15 / 15
DKIM 20 / 20
DMARC 0 / 25
DNSSEC 0 / 10
Transport (MTA-STS/DANE) 0 / 15
TLS-RPT 0 / 5

Industry avg.: 56.8 ▼ 11.8
Canton avg.: 56.6 ▼ 11.6
Overall avg.: 53.5 ▼ 8.5
Rank 27 of 32 in the industry

Findings

✕No DMARC record

Without DMARC no receiver reliably rejects forged mail in the domain's name, and the organisation receives no abuse reports.
!SPF close to the 10-lookup limit (8)

One more sending service can break the limit. Flattening or subdomains for third parties create headroom.
!DKIM key below 2048 bits

RSA-1024 is considered too weak (RFC 8301, M3AAWG). Rotate to 2048-bit keys.
!DNSSEC not enabled

Without DNSSEC, DNS answers can be forged in transit. DANE requires DNSSEC.
!No MTA-STS

Without MTA-STS (or DANE) inbound encryption is not enforced; an attacker on the path can downgrade to plain text.
!No TLS reporting (TLS-RPT)

Without TLS-RPT the organisation does not learn when senders fail to deliver encrypted.

Check live in the Mail DNS Check →

Who runs the mail?

Mailbox provider: Microsoft 365
Provider jurisdiction: USA · MX: US
Detection confidence: 100 / 100
Microsoft tenant: Managed · Swiss Steel Group
Tenant region: EU

Signals (6)

MX	Microsoft 365	`swisssteelgroup-com.mail.protection.outlook.com`
SPF	Microsoft 365	`include:spf.protection.outlook.com`
DKIM	Microsoft 365	`selector1 → selector1-swisssteelgroup-com._domainkey.it4ssg.onmicrosoft.com`
Domain verification	Microsoft 365	`MS=ms66383357`
Network	Microsoft 365	`AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation`
Entra ID	Microsoft 365	`Entra-ID-Tenant (Managed)`

MX servers

Pref	Host	IP	Network	Country	TLSA
100	`swisssteelgroup-com.mail.protection.outlook.com`	`52.101.185.14`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US	–
		`52.101.185.13`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US
		`52.101.185.12`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US

SPF

v=spf1 a mx include:spf.protection.outlook.com include:sbstahl.com include:spf.protection.cyon.net -all

all: -all
DNS lookups: 8 / 10
Includes: spf.protection.outlook.comsbstahl.comspf.protection.cyon.net
Detected sending services: Microsoft 365, Mailjet, Hornetsecurity

DMARC

Without DMARC no receiver reliably rejects forged mail in the domain's name, and the organisation receives no abuse reports.

DKIM

Selector	Key	delegated to
`mailjet`	RSA 1024	–
`selector1`	RSA 2048	`selector1-swisssteelgroup-com._domainkey.it4ssg.onmicrosoft.com`

Checked: 100 common selectors. Keys under custom selectors remain invisible.

Transport encryption

MTA-STS: missing
DANE: missing
DNSSEC: missing
TLS-RPT: missing
BIMI: missing

Verified services

From verification records in the domain TXT: services where the domain is verified.

Microsoft 365AppleDocuSignCisco Webex

History

18 October 2026 Score 45 · DMARC -

All changes of this organisation in the change log →

Raw data

swisssteelgroup.com. IN MX 100 swisssteelgroup-com.mail.protection.outlook.com.
swisssteelgroup.com. IN TXT "v=spf1 a mx include:spf.protection.outlook.com include:sbstahl.com include:spf.protection.cyon.net -all"

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