Lindenhofgruppe
lindenhofgruppe.ch
- Industry
- Healthcare
- Headquarters
- Bern, Bern
- Type
- private
- Employees (approx.)
- 3,600
- Checked on
- 19 October 2026
74/100Grade B
Protection against forged senders: largely protected, with a gap: subdomains not protected (sp=none)
Points per criterion
- MX 10 / 10
- SPF 15 / 15
- DKIM 20 / 20
- DMARC 19 / 25
- DNSSEC 10 / 10
- Transport (MTA-STS/DANE) 0 / 15
- TLS-RPT 0 / 5
- Industry avg.: 54.8 ▲ 19.2
- Canton avg.: 53.1 ▲ 20.9
- Overall avg.: 53.5 ▲ 20.5
- Rank 15 of 113 in the industry
Findings
-
!SPF close to the 10-lookup limit (8)
One more sending service can break the limit. Flattening or subdomains for third parties create headroom.
-
!Subdomains unprotected (sp=none)
The main domain is protected, but subdomains such as invoice.company.ch can still be forged.
-
!DKIM key below 2048 bits
RSA-1024 is considered too weak (RFC 8301, M3AAWG). Rotate to 2048-bit keys.
-
!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.
Who runs the mail?
- Mailbox provider
- Microsoft 365
- Provider jurisdiction
- USA · MX: US
- Detection confidence
- 100 / 100
- Microsoft tenant
- Managed · lindenhofgruppe.ch
- Tenant region
- EU
Signals (7)
| MX | Microsoft 365 | lindenhofgruppe-ch.mail.protection.outlook.com |
|---|---|---|
| SPF | Microsoft 365 | include:spf.protection.outlook.com |
| DKIM | Microsoft 365 | selector1 → selector1-lindenhofgruppe-ch._domainkey.lindenhofgruppech.onmicrosoft.com |
| Domain verification | Microsoft 365 | MS=ms12080898 |
| Network | Microsoft 365 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation |
| SPF | Amazon | include:amazonses.com |
| Entra ID | Microsoft 365 | Entra-ID-Tenant (Managed) |
MX servers
| Pref | Host | IP | Network | Country | TLSA |
|---|---|---|---|---|---|
| 0 | lindenhofgruppe-ch.mail.protection.outlook.com | 52.101.185.14 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US | – |
52.101.187.1 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US | |||
52.101.185.12 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US |
SPF
v=spf1 a mx:hin.ch include:_spf.atlassian.net include:_spf.rexx-suite.com include:spf.protection.outlook.com include:spfmailgun.lindenhofgruppe.ch ip4:5.102.145.244 ip6:2a06:c01:1:1102::244 ip4:5.102.149.240 ip6:2a06:c01:1000:1166::240 ip4:85.236.55.225/27 a:spf.trendhosting-net.ch -all- all
-all- DNS lookups
- 8 / 10
- Includes
_spf.atlassian.net_spf.rexx-suite.comspf.protection.outlook.comspfmailgun.lindenhofgruppe.ch- Detected sending services
- Atlassian, Amazon SES, Microsoft 365, Mailgun
- IPv4
- 34 addresses authorised directly
DMARC
v=DMARC1; p=quarantine; pct=100; rua=mailto:re+ardckvrnzch@dmarc.postmarkapp.com; sp=none; aspf=r;- Policy
- p=quarantine
- Subdomains (sp)
- none
- Share (pct)
- 100 %
- Alignment DKIM/SPF
- relaxed / relaxed
- Aggregate reports (rua)
re+ardckvrnzch@dmarc.postmarkapp.com- Report services
- Postmark
DKIM
| Selector | Key | delegated to |
|---|---|---|
selector1 | RSA 1024 | selector1-lindenhofgruppe-ch._domainkey.lindenhofgruppech.onmicrosoft.com |
selector2 | RSA 2048 | selector2-lindenhofgruppe-ch._domainkey.lindenhofgruppech.onmicrosoft.com |
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.
Microsoft 365AppleAtlassianTeamViewer
History
- Score 74 · DMARC quarantine
Raw data
lindenhofgruppe.ch. IN MX 0 lindenhofgruppe-ch.mail.protection.outlook.com.
lindenhofgruppe.ch. IN TXT "v=spf1 a mx:hin.ch include:_spf.atlassian.net include:_spf.rexx-suite.com include:spf.protection.outlook.com include:spfmailgun.lindenhofgruppe.ch ip4:5.102.145.244 ip6:2a06:c01:1:1102::244 ip4:5.102.149.240 ip6:2a06:c01:1000:1166::240 ip4:85.236.55.225/27 a:spf.trendhosting-net.ch -all"
_dmarc.lindenhofgruppe.ch. IN TXT "v=DMARC1; p=quarantine; pct=100; rua=mailto:re+ardckvrnzch@dmarc.postmarkapp.com; sp=none; aspf=r;"