Winterhalter + Fenner

w-f.ch

Industry: Retail
Headquarters: Wallisellen, Zurich
Type: private
Employees (approx.): 500
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.: 60.1 ▲ 9.9
Canton avg.: 53 ▲ 17
Overall avg.: 53.5 ▲ 16.5
Rank 20 of 58 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
Upstream gateway: Mimecast
Provider jurisdiction: USA · MX: DE
Detection confidence: 90 / 100
Microsoft tenant: Managed · Sonepar
Tenant region: EU

Signals (4)

SPF	Microsoft 365	`include:spf.protection.outlook.com`
Domain verification	Microsoft 365	`MS=ms48530207`
Domain verification	Google Workspace	`google-site-verification=b6nC9gvQhq_ad_d`
Entra ID	Microsoft 365	`Entra-ID-Tenant (Managed)`

MX servers

Pref	Host	IP	Network	Country	TLSA
10	`de-smtp-inbound-2.mimecast.com`	`194.104.108.22`	AS39588 MIMECAST-DE - Mimecast Services Limited	DE	–
10	`de-smtp-inbound-2.mimecast.com`	`194.104.110.22`	AS39588 MIMECAST-DE - Mimecast Services Limited	DE	–
10	`de-smtp-inbound-1.mimecast.com`	`194.104.108.22`	AS39588 MIMECAST-DE - Mimecast Services Limited	DE	–
10	`de-smtp-inbound-1.mimecast.com`	`194.104.110.22`	AS39588 MIMECAST-DE - Mimecast Services Limited	DE	–

SPF

v=spf1 a:mailout.ip-plus.net ip4:194.209.127.34 ip4:80.242.195.162 ip4:83.169.24.15 ip4:194.112.241.0/26 include:spf_mx03.glattnet.ch include:spf.protection.outlook.com include:de._netblocks.mimecast.com -all

all: -all
DNS lookups: 4 / 10
Includes: spf_mx03.glattnet.chspf.protection.outlook.comde._netblocks.mimecast.com
Detected sending services: Microsoft 365, Mimecast
IPv4: 67 addresses authorised directly

DMARC

v=DMARC1; p=reject; fo=1; rua=mailto:697a89261ead030@rep.dmarcanalyzer.com; ruf=mailto:697a89261ead030@rep.dmarcanalyzer.com

Policy: p=reject
Subdomains (sp): inherits p=reject
Share (pct): 100 %
Alignment DKIM/SPF: relaxed / relaxed
Aggregate reports (rua): 697a89261ead030@rep.dmarcanalyzer.com
Forensic reports (ruf): 697a89261ead030@rep.dmarcanalyzer.com

DKIM

Selector	Key	delegated to
`dk`	RSA 1024	–

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 365GoogleApple

History

19 October 2026 Score 70 · DMARC reject

All changes of this organisation in the change log →

Raw data

w-f.ch. IN MX 10 de-smtp-inbound-2.mimecast.com.
w-f.ch. IN MX 10 de-smtp-inbound-1.mimecast.com.
w-f.ch. IN TXT "v=spf1 a:mailout.ip-plus.net ip4:194.209.127.34 ip4:80.242.195.162 ip4:83.169.24.15 ip4:194.112.241.0/26 include:spf_mx03.glattnet.ch include:spf.protection.outlook.com include:de._netblocks.mimecast.com -all"
_dmarc.w-f.ch. IN TXT "v=DMARC1; p=reject; fo=1; rua=mailto:697a89261ead030@rep.dmarcanalyzer.com; ruf=mailto:697a89261ead030@rep.dmarcanalyzer.com"

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