Zürcher Kantonalbank

zkb.ch

Industry
Banking
Headquarters
Zürich, Zurich
Type
public
Employees (approx.)
5,800
Checked on
19 October 2026
60/100Grade C

Protection against forged senders: protected

Points per criterion

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

Findings

  • !No DKIM key found

    No key was found under more than 100 common selectors. A custom selector is possible, but without DKIM there is no cryptographic sender check.

  • !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
Federated · Zürcher Kantonalbank
Tenant region
EU
Federated via
adfsextern.prod.zkb.ch
Signals (2)
Domain verificationGoogle Workspacegoogle-site-verification=6joXNHpbFAkzNAR
Entra IDMicrosoft 365Entra-ID-Tenant (Federated)

MX servers

PrefHostIPNetworkCountryTLSA
16 mail2.zkb.ch 62.240.192.121 AS13267 UNSPECIFIED - Zuercher Kantonalbank CH –
16 mail1.zkb.ch 62.240.192.120 AS13267 UNSPECIFIED - Zuercher Kantonalbank CH –

SPF

v=spf1 ip4:62.240.192.0/23 -all
all
-all
DNS lookups
0 / 10
IPv4
512 addresses authorised directly

DMARC

v=DMARC1; p=reject; rua=mailto:mailauth-reports@zkb.ch; ruf=mailto:mailauth-reports@zkb.ch;
Policy
p=reject
Subdomains (sp)
inherits p=reject
Share (pct)
100 %
Alignment DKIM/SPF
relaxed / relaxed
Aggregate reports (rua)
mailauth-reports@zkb.ch
Forensic reports (ruf)
mailauth-reports@zkb.ch

DKIM

No DKIM key found

Checked: 100 common selectors. Keys under custom selectors remain invisible.

Transport encryption

MTA-STS
missing
DANE
missing
DNSSEC
active
TLS-RPT
missing
BIMI
missing

Verified services

From verification records in the domain TXT: services where the domain is verified.

GoogleMeta/FacebookZoom

History

  • Score 60 · DMARC reject

All changes of this organisation in the change log →

Raw data
zkb.ch. IN MX 16 mail2.zkb.ch.
zkb.ch. IN MX 16 mail1.zkb.ch.
zkb.ch. IN TXT "v=spf1 ip4:62.240.192.0/23 -all"
_dmarc.zkb.ch. IN TXT "v=DMARC1; p=reject; rua=mailto:mailauth-reports@zkb.ch; ruf=mailto:mailauth-reports@zkb.ch;"

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