Schurter

schurter.com

Industry: Machinery & electrical
Headquarters: Luzern, Lucerne
Type: private
Employees (approx.): 2,400
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.: 62.2 ▲ 7.8
Canton avg.: 56.6 ▲ 13.4
Overall avg.: 53.5 ▲ 16.5
Rank 39 of 112 in the industry

Findings

!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: CH, DE
Detection confidence: 100 / 100
Microsoft tenant: Managed · SCHURTERGROUP
Tenant region: EU

Signals (7)

SPF	Microsoft 365	`include:spf.protection.outlook.com`
DKIM	Microsoft 365	`selector1 → selector1-schurter-com._domainkey.schurtergroup.onmicrosoft.com`
Autodiscover	Microsoft 365	`autodiscover.outlook.com`
Domain verification	Microsoft 365	`MS=ms84740822`
Domain verification	Google Workspace	`google-site-verification=AIj8SivI8U8rtZg`
Network	Swisscom	`AS3303 SWISSCOM - Swisscom (Schweiz) AG`
Entra ID	Microsoft 365	`Entra-ID-Tenant (Managed)`

MX servers

Pref	Host	IP	Network	Country	TLSA
10	`styx.schurter.ch`	`193.247.245.11`	AS3303 SWISSCOM - Swisscom (Schweiz) AG	CH	–
20	`acheron.schurter.de`	`213.172.103.122`	AS25394 MK-NETZDIENSTE-AS - MK Netzdienste Verwaltungs GmbH trading as MK Netzdienste GmbH & Co. KG	DE	–

SPF

v=spf1 mx ip4:82.100.239.50 ip4:5.148.186.143  include:spf.protection.outlook.com include:spf.exclaimer.net include:spf.dynect.net include:25768216.spf06.hubspotemail.net -all

all: -all
DNS lookups: 5 / 10
Includes: spf.protection.outlook.comspf.exclaimer.netspf.dynect.net25768216.spf06.hubspotemail.net
Detected sending services: Microsoft 365, HubSpot
IPv4: 2 addresses authorised directly

DMARC

v=DMARC1; p=reject; sp=reject; rua=mailto:dmarc.reports@schurter.com; ruf=mailto:dmarc.reports@schurter.com; rf=afrf; pct=100; ri=86400

Policy: p=reject
Subdomains (sp): reject
Share (pct): 100 %
Alignment DKIM/SPF: relaxed / relaxed
Aggregate reports (rua): dmarc.reports@schurter.com
Forensic reports (ruf): dmarc.reports@schurter.com

DKIM

Selector	Key	delegated to
`selector1`	RSA 1024	`selector1-schurter-com._domainkey.schurtergroup.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 365GoogleAtlassianAirtableAhrefs

History

18 October 2026 Score 70 · DMARC reject

All changes of this organisation in the change log →

Raw data

schurter.com. IN MX 10 styx.schurter.ch.
schurter.com. IN MX 20 acheron.schurter.de.
schurter.com. IN TXT "v=spf1 mx ip4:82.100.239.50 ip4:5.148.186.143  include:spf.protection.outlook.com include:spf.exclaimer.net include:spf.dynect.net include:25768216.spf06.hubspotemail.net -all"
_dmarc.schurter.com. IN TXT "v=DMARC1; p=reject; sp=reject; rua=mailto:dmarc.reports@schurter.com; ruf=mailto:dmarc.reports@schurter.com; rf=afrf; pct=100; ri=86400"

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