Mammut

mammut.com

Industry: Watches, luxury & consumer goods
Headquarters: Seon, Aargau
Type: private
Employees (approx.): 800
Checked on: 19 October 2026

70/100Grade B

Protection against forged senders: protected

Points per criterion

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

Industry avg.: 66.9 ▲ 3.1
Canton avg.: 57.3 ▲ 12.7
Overall avg.: 53.5 ▲ 16.5
Rank 17 of 43 in the industry

Findings

!SPF close to the 10-lookup limit (9)

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: Self-hosted / other
Provider jurisdiction: Switzerland · MX: CH
Detection confidence: 85 / 100
Microsoft tenant: Managed · Mammut Sports Group AG
Tenant region: EU

Signals (6)

SPF	Microsoft 365	`include:spf.protection.outlook.com`
Domain verification	Microsoft 365	`MS=ms46534416`
Network	Microsoft 365	`AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation`
SPF	Google Workspace	`include:_spf.google.com`
Domain verification	Google Workspace	`google-site-verification=aChf8hXzPg7zVQk`
Entra ID	Microsoft 365	`Entra-ID-Tenant (Managed)`

MX servers

Pref	Host	IP	Network	Country	TLSA
10	`mx3.mammut.ch`	`213.156.248.40`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	CH	–
20	`mx2.mammut.ch`	`213.156.227.24`	AS9092 OPENSYSTEMS-AS - Open Systems AG	CH	–

SPF

v=spf1 mx include:spf1.mammut.com include:spf2.mammut.com include:spf.protection.outlook.com include:sendgrid.net include:spf.redpoints.com include:spf.eu.signature365.net -all

all: -all
DNS lookups: 9 / 10
Includes: spf1.mammut.comspf2.mammut.comspf.protection.outlook.comsendgrid.netspf.redpoints.comspf.eu.signature365.net
Detected sending services: Microsoft 365, SendGrid, Google

DMARC

v=DMARC1; p=reject; rua=mailto:dmarc-reports-54504206756964364169@open.ch; rf=afrf; pct=100; ri=86400

Policy: p=reject
Subdomains (sp): inherits p=reject
Share (pct): 100 %
Alignment DKIM/SPF: relaxed / relaxed
Aggregate reports (rua): dmarc-reports-54504206756964364169@open.ch

DKIM

Selector	Key	delegated to
`s1`	RSA 2048	`s1.domainkey.u8811338.wl089.sendgrid.net`
`s2`	RSA 1024	`s2.domainkey.u8811338.wl089.sendgrid.net`

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 365GoogleAppleAtlassianBrevo

History

18 October 2026 Score 70 · DMARC reject

All changes of this organisation in the change log →

Raw data

mammut.com. IN MX 10 mx3.mammut.ch.
mammut.com. IN MX 20 mx2.mammut.ch.
mammut.com. IN TXT "v=spf1 mx include:spf1.mammut.com include:spf2.mammut.com include:spf.protection.outlook.com include:sendgrid.net include:spf.redpoints.com include:spf.eu.signature365.net -all"
_dmarc.mammut.com. IN TXT "v=DMARC1; p=reject; rua=mailto:dmarc-reports-54504206756964364169@open.ch; rf=afrf; pct=100; ri=86400"

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