Bürgenstock Hotels
buergenstock.ch
- Industry
- Tourism & hospitality
- Headquarters
- Ennetbürgen, Nidwalden
- Type
- private
- Employees (approx.)
- 800
- Checked on
- 19 October 2026
55/100Grade C
Protection against forged senders: protected
Points per criterion
- MX 10 / 10
- SPF 0 / 15
- DKIM 20 / 20
- DMARC 25 / 25
- DNSSEC 0 / 10
- Transport (MTA-STS/DANE) 0 / 15
- TLS-RPT 0 / 5
- Industry avg.: 57.3 ▼ 2.3
- Canton avg.: 53.2 ▲ 1.8
- Overall avg.: 53.5 ▲ 1.5
- Rank 19 of 38 in the industry
Findings
-
!SPF contains void includes (1)
At least one include points to a domain without SPF. Usually a leftover of a retired service; it can cause a permerror.
-
!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.
-
iDKIM in testing mode (t=y)
Receivers may ignore signatures in testing mode.
Who runs the mail?
- Mailbox provider
- Microsoft 365
- Provider jurisdiction
- USA · MX: US
- Detection confidence
- 100 / 100
- Microsoft tenant
- Managed · Bürgenstock Collection
- Tenant region
- EU
Signals (10)
| MX | Microsoft 365 | buergenstock-ch.mail.protection.outlook.com |
|---|---|---|
| SPF | Microsoft 365 | include:spf.protection.outlook.com |
| DKIM | Microsoft 365 | selector1 → selector1-buergenstock-ch._domainkey.kataraswiss.onmicrosoft.com |
| Autodiscover | Microsoft 365 | autodiscover.outlook.com |
| Domain verification | Microsoft 365 | MS=ms51139952 |
| Network | Microsoft 365 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation |
| Domain verification | Google Workspace | google-site-verification=hVA-TSk0W40fmyx |
| SPF | Amazon | include:amazonses.com |
| Domain verification | Amazon | amazonses:vUcYiqLzhh9c2nfiMSG+bueDuaptWi |
| Entra ID | Microsoft 365 | Entra-ID-Tenant (Managed) |
MX servers
| Pref | Host | IP | Network | Country | TLSA |
|---|---|---|---|---|---|
| 0 | buergenstock-ch.mail.protection.outlook.com | 52.101.185.12 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US | – |
52.101.187.1 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US | |||
52.101.185.14 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US |
SPF
v=spf1 ip4:193.135.218.34 include:amazonses.com include:spf.umantis.com include:spf.de.umantis.com include:spf.protection.outlook.com include:mailout.ip-plus.net include:spf.resdiary.com -all- all
-all- DNS lookups
- 7 / 10
- Includes
amazonses.comspf.umantis.comspf.de.umantis.comspf.protection.outlook.commailout.ip-plus.netspf.resdiary.com- Detected sending services
- Amazon SES, Microsoft 365
- IPv4
- 1 addresses authorised directly
DMARC
v=DMARC1; p=reject; rua=mailto:dmarc_agg@vali.email;- Policy
- p=reject
- Subdomains (sp)
- inherits p=reject
- Share (pct)
- 100 %
- Alignment DKIM/SPF
- relaxed / relaxed
- Aggregate reports (rua)
dmarc_agg@vali.email
DKIM
| Selector | Key | delegated to |
|---|---|---|
cm | RSA 1024 · t=y | – |
s1 | RSA 2048 | s1.domainkey.u5809972.wl223.sendgrid.net |
s2 | RSA 1024 | s2.domainkey.u5809972.wl223.sendgrid.net |
selector1 | RSA 1024 | selector1-buergenstock-ch._domainkey.kataraswiss.onmicrosoft.com |
selector2 | RSA 1024 | selector2-buergenstock-ch._domainkey.kataraswiss.onmicrosoft.com |
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 365GoogleAmazon SES
History
- Score 55 · DMARC reject
Raw data
buergenstock.ch. IN MX 0 buergenstock-ch.mail.protection.outlook.com.
buergenstock.ch. IN TXT "v=spf1 ip4:193.135.218.34 include:amazonses.com include:spf.umantis.com include:spf.de.umantis.com include:spf.protection.outlook.com include:mailout.ip-plus.net include:spf.resdiary.com -all"
_dmarc.buergenstock.ch. IN TXT "v=DMARC1; p=reject; rua=mailto:dmarc_agg@vali.email;"