Griesser

griesser.ch

Industry: Building materials
Headquarters: Aadorf, Thurgau
Type: private
Employees (approx.): 1,300
Checked on: 19 October 2026

64/100Grade C

Protection against forged senders: largely protected

Points per criterion

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

Industry avg.: 60.3 ▲ 3.7
Canton avg.: 41.3 ▲ 22.7
Overall avg.: 53.5 ▲ 10.5
Rank 10 of 20 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: Microsoft 365
Provider jurisdiction: USA · MX: US
Detection confidence: 100 / 100
Microsoft tenant: Managed · Griesser Group
Tenant region: EU

Signals (7)

MX	Microsoft 365	`griesser-ch.mail.protection.outlook.com`
SPF	Microsoft 365	`include:spf.protection.outlook.com`
DKIM	Microsoft 365	`selector1 → selector1-griesser-ch._domainkey.griesser.onmicrosoft.com`
Autodiscover	Microsoft 365	`autodiscover.outlook.com`
Network	Microsoft 365	`AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation`
Domain verification	Google Workspace	`google-site-verification=033IftHTKyx8GLT`
Entra ID	Microsoft 365	`Entra-ID-Tenant (Managed)`

MX servers

Pref	Host	IP	Network	Country	TLSA
10	`griesser-ch.mail.protection.outlook.com`	`52.101.73.145`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US	–
		`52.101.185.21`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US
		`52.101.68.10`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US

SPF

v=spf1 mx ip4:217.71.91.213 ip4:217.71.92.145 ip4:217.71.84.188 ip4:212.80.96.0/21 ip4:168.119.205.36 ip4:3.67.54.56 include:spf.sosafe.de include:spf.protection.outlook.com include:spf.umantis.com include:mail.zendesk.com include:eu.mailgun.org include:spf.escapenet.ch -all

all: -all
DNS lookups: 9 / 10
Includes: spf.sosafe.despf.protection.outlook.comspf.umantis.commail.zendesk.comeu.mailgun.orgspf.escapenet.ch
Detected sending services: Microsoft 365, Zendesk, Mailgun
IPv4: 2,053 addresses authorised directly

DMARC

v=DMARC1; p=quarantine; sp=quarantine; adkim=r; aspf=r; pct=100; rua=mailto:dmarc@zxcujn6m.uriports.com;ruf=mailto:dmarc@zxcujn6m.uriports.com

Policy: p=quarantine
Subdomains (sp): quarantine
Share (pct): 100 %
Alignment DKIM/SPF: relaxed / relaxed
Aggregate reports (rua): dmarc@zxcujn6m.uriports.com
Forensic reports (ruf): dmarc@zxcujn6m.uriports.com
Report services: URIports

DKIM

Selector	Key	delegated to
`s1`	RSA 1024	–
`s2`	RSA 1024	`s2.domainkey.u7579514.wl015.sendgrid.net`
`selector1`	RSA 1024	`selector1-griesser-ch._domainkey.griesser.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.

GoogleAutodesk

History

19 October 2026 Score 64 · DMARC quarantine

All changes of this organisation in the change log →

Raw data

griesser.ch. IN MX 10 griesser-ch.mail.protection.outlook.com.
griesser.ch. IN TXT "v=spf1 mx ip4:217.71.91.213 ip4:217.71.92.145 ip4:217.71.84.188 ip4:212.80.96.0/21 ip4:168.119.205.36 ip4:3.67.54.56 include:spf.sosafe.de include:spf.protection.outlook.com include:spf.umantis.com include:mail.zendesk.com include:eu.mailgun.org include:spf.escapenet.ch -all"
_dmarc.griesser.ch. IN TXT "v=DMARC1; p=quarantine; sp=quarantine; adkim=r; aspf=r; pct=100; rua=mailto:dmarc@zxcujn6m.uriports.com;ruf=mailto:dmarc@zxcujn6m.uriports.com"

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