Dreier

dreier.ch

Industry
Transport & logistics
Headquarters
Suhr, Aargau
Type
private
Employees (approx.)
400
Checked on
19 October 2026
44/100Grade C

Protection against forged senders: largely protected

Points per criterion

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

Findings

  • !DMARC without reporting (no rua)

    Without aggregate reports it stays invisible who sends in the domain's name.

  • !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.

  • !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, DE
Detection confidence
100 / 100
Microsoft tenant
Managed · Dreier AG
Tenant region
EU
Signals (6)
MXMicrosoft 365dreier-ch.mail.protection.outlook.com
SPFMicrosoft 365include:spf.protection.outlook.com
AutodiscoverMicrosoft 365autodiscover.outlook.com
NetworkMicrosoft 365AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation
Domain verificationGoogle Workspacegoogle-site-verification=V-l-oJ4QeGwkC8n
Entra IDMicrosoft 365Entra-ID-Tenant (Managed)

MX servers

PrefHostIPNetworkCountryTLSA
0 dreier-ch.mail.protection.outlook.com 52.101.103.137 AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation US –
52.101.91.21 AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation US
52.101.185.114 AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation US
10 mx01.badencloud.de 217.28.96.70 AS15894 LEITWERK-AS - LEITWERK AG DE –
10 mx02.badencloud.de 217.28.96.72 AS15894 LEITWERK-AS - LEITWERK AG DE –

SPF

v=spf1 a:mail.dreier.ch a:mail.ostendis.ch ip4:94.231.81.6 ip4:82.220.33.16/29 include:spf.protection.outlook.com include:spf.protection.biwac.ch include:_spf-ipa.badencloud.de -all
all
-all
DNS lookups
5 / 10
Includes
spf.protection.outlook.comspf.protection.biwac.ch_spf-ipa.badencloud.de
Detected sending services
Microsoft 365
IPv4
9 addresses authorised directly

DMARC

v=DMARC1; p=quarantine
Policy
p=quarantine
Subdomains (sp)
inherits p=quarantine
Share (pct)
100 %
Alignment DKIM/SPF
relaxed / relaxed
Aggregate reports (rua)
–

DKIM

No DKIM key found

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.

Google

History

  • Score 44 · DMARC quarantine

All changes of this organisation in the change log →

Raw data
dreier.ch. IN MX 0 dreier-ch.mail.protection.outlook.com.
dreier.ch. IN MX 10 mx01.badencloud.de.
dreier.ch. IN MX 10 mx02.badencloud.de.
dreier.ch. IN TXT "v=spf1 a:mail.dreier.ch a:mail.ostendis.ch ip4:94.231.81.6 ip4:82.220.33.16/29 include:spf.protection.outlook.com include:spf.protection.biwac.ch include:_spf-ipa.badencloud.de -all"
_dmarc.dreier.ch. IN TXT "v=DMARC1; p=quarantine"

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