United Grinding Group

grinding.ch

Industry: Machinery & electrical
Headquarters: Bern, Bern
Type: private
Employees (approx.): 1,500
Checked on: 19 October 2026

49/100Grade C

Protection against forged senders: largely protected

Points per criterion

MX 10 / 10
SPF 0 / 15
DKIM 20 / 20
DMARC 19 / 25
DNSSEC 0 / 10
Transport (MTA-STS/DANE) 0 / 15
TLS-RPT 0 / 5

Industry avg.: 62.2 ▼ 13.2
Canton avg.: 53.1 ▼ 4.1
Overall avg.: 53.5 ▼ 4.5
Rank 102 of 112 in the industry

Findings

✕SPF exceeds 10 DNS lookups (12)

More than ten lookups (include, a, mx, ptr, exists, redirect) cause a permerror; many receivers then treat SPF as failed.
!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 · United Grinding Group Management AG
Tenant region: EU

Signals (8)

MX	Microsoft 365	`grinding-ch.mail.protection.outlook.com`
SPF	Microsoft 365	`include:spf.protection.outlook.com`
DKIM	Microsoft 365	`selector1 → selector1-grinding-ch._domainkey.unitedgrindinggroup.onmicrosoft.com`
Autodiscover	Microsoft 365	`autodiscover.outlook.com`
Domain verification	Microsoft 365	`MS=ms78525821`
Network	Microsoft 365	`AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation`
Domain verification	Google Workspace	`google-site-verification=U7H9HU58ouxx6IJ`
Entra ID	Microsoft 365	`Entra-ID-Tenant (Managed)`

MX servers

Pref	Host	IP	Network	Country	TLSA
10	`grinding-ch.mail.protection.outlook.com`	`52.101.185.12`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US	–
		`52.101.187.1`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US
		`52.101.185.14`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US

SPF

v=spf1 include:spf.protection.outlook.com include:spf.vizito.be include:_spf.cmail.ondemand.com include:vms13.leuchtfeuer.com include:inxserver.com include:spf.nl2go.com -all

all: -all
DNS lookups: 12 / 10
Includes: spf.protection.outlook.comspf.vizito.be_spf.cmail.ondemand.comvms13.leuchtfeuer.cominxserver.comspf.nl2go.com
Detected sending services: Microsoft 365

DMARC

v=DMARC1;p=quarantine;pct=100;rua=mailto:dmarc@grinding.ch;aspf=r;fo=1;adkim=r

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

DKIM

Selector	Key	delegated to
`selector1`	RSA 1024	`selector1-grinding-ch._domainkey.unitedgrindinggroup.onmicrosoft.com`
`selector2`	RSA 1024	`selector2-grinding-ch._domainkey.unitedgrindinggroup.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 365GoogleAdobeTeamViewer

History

19 October 2026 Score 49 · DMARC quarantine

All changes of this organisation in the change log →

Raw data

grinding.ch. IN MX 10 grinding-ch.mail.protection.outlook.com.
grinding.ch. IN TXT "v=spf1 include:spf.protection.outlook.com include:spf.vizito.be include:_spf.cmail.ondemand.com include:vms13.leuchtfeuer.com include:inxserver.com include:spf.nl2go.com -all"
_dmarc.grinding.ch. IN TXT "v=DMARC1;p=quarantine;pct=100;rua=mailto:dmarc@grinding.ch;aspf=r;fo=1;adkim=r"

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