Rafael Pfister
+41 58 510 22 08 Consulting

Basler & Hofmann

baslerhofmann.ch

Industry
Consulting & audit
Headquarters
Esslingen, Zurich
Type
private
Employees (approx.)
900
Checked on
19 October 2026
76/100Grade B

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) 12 / 15
  • TLS-RPT 0 / 5

Findings

  • !SPF close to the 10-lookup limit (10)

    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.

  • iDANE active (TLSA with DNSSEC)

    All MX hosts publish TLSA records secured by DNSSEC.

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 · Basler & Hofmann
Tenant region
EU
Signals (6)
MXMicrosoft 365baslerhofmann-ch.l-v1.mx.microsoft
SPFMicrosoft 365include:spf.protection.outlook.com
DKIMMicrosoft 365selector1 → selector1-baslerhofmann-ch._domainkey.baslerhofmann.onmicrosoft.com
AutodiscoverMicrosoft 365autodiscover.outlook.com
NetworkMicrosoft 365AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation
Entra IDMicrosoft 365Entra-ID-Tenant (Managed)

MX servers

PrefHostIPNetworkCountryTLSA
10 baslerhofmann-ch.l-v1.mx.microsoft 52.101.185.14 AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation US ✓ DNSSEC
52.101.185.13 AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation US
52.101.187.1 AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation US

SPF

v=spf1 mx ip4:62.2.47.244 ip4:81.7.254.14 a:mx.droppy.ch a:vpro0344.proserver.punkt.de a:smtp.primeteach.ch a:bh-panoramic.herokuapp.com include:spf.protection.outlook.com include:spf.umantis.com include:spf.mailjet.com include:147404320.spf01.hubspotemail.net include:148407979.spf04.hubspotemail.net -all
all
-all
DNS lookups
10 / 10
Includes
spf.protection.outlook.comspf.umantis.comspf.mailjet.com147404320.spf01.hubspotemail.net148407979.spf04.hubspotemail.net
Detected sending services
Microsoft 365, Mailjet, HubSpot
IPv4
2 addresses authorised directly

DMARC

v=DMARC1; p=quarantine; sp=quarantine; pct=100; rf=afrf; fo=0; aspf=r; adkim=r; ruf=mailto:dmarc@baslerhofmann.ch; rua=mailto:dmarc@baslerhofmann.ch
Policy
p=quarantine
Subdomains (sp)
quarantine
Share (pct)
100 %
Alignment DKIM/SPF
relaxed / relaxed
Aggregate reports (rua)
dmarc@baslerhofmann.ch
Forensic reports (ruf)
dmarc@baslerhofmann.ch

DKIM

SelectorKeydelegated to
mailjet RSA 1024 –
selector1 RSA 2048 selector1-baslerhofmann-ch._domainkey.baslerhofmann.onmicrosoft.com

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

Transport encryption

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

History

  • Score 76 · DMARC quarantine

All changes of this organisation in the change log →

Raw data 
baslerhofmann.ch. IN MX 10 baslerhofmann-ch.l-v1.mx.microsoft.
baslerhofmann.ch. IN TXT "v=spf1 mx ip4:62.2.47.244 ip4:81.7.254.14 a:mx.droppy.ch a:vpro0344.proserver.punkt.de a:smtp.primeteach.ch a:bh-panoramic.herokuapp.com include:spf.protection.outlook.com include:spf.umantis.com include:spf.mailjet.com include:147404320.spf01.hubspotemail.net include:148407979.spf04.hubspotemail.net -all"
_dmarc.baslerhofmann.ch. IN TXT "v=DMARC1; p=quarantine; sp=quarantine; pct=100; rf=afrf; fo=0; aspf=r; adkim=r; ruf=mailto:dmarc@baslerhofmann.ch; rua=mailto:dmarc@baslerhofmann.ch"

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