Hotelplan Group
hotelplan.com
- Industry
- Tourism & hospitality
- Headquarters
- Glattbrugg, Zurich
- Type
- private
- Employees (approx.)
- 2,500
- Checked on
- 19 October 2026
51/100Grade C
Protection against forged senders: not protected (monitoring only)
Points per criterion
- MX 10 / 10
- SPF 15 / 15
- DKIM 20 / 20
- DMARC 6 / 25
- DNSSEC 0 / 10
- Transport (MTA-STS/DANE) 0 / 15
- TLS-RPT 0 / 5
- Industry avg.: 57.3 ▼ 6.3
- Canton avg.: 53 ▼ 2
- Overall avg.: 53.5 ▼ 2.5
- Rank 23 of 38 in the industry
Findings
-
✕DMARC in monitoring mode only (p=none)
p=none provides reports but does not reject a single forgery. The goal is p=reject.
-
!SPF close to the 10-lookup limit (10)
One more sending service can break the limit. Flattening or subdomains for third parties create headroom.
-
!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.
Who runs the mail?
- Mailbox provider
- Microsoft 365
- Upstream gateway
- Proofpoint
- Provider jurisdiction
- USA · MX: US
- Detection confidence
- 99 / 100
- Microsoft tenant
- Managed · Hotelplan Group
- Tenant region
- EU
Signals (5)
| SPF | Microsoft 365 | include:spf.protection.outlook.com |
|---|---|---|
| DKIM | Microsoft 365 | selector1 → selector1-hotelplan-com._domainkey.hotelplangroup.n-v1.dkim.mail.microsoft |
| Domain verification | Microsoft 365 | MS=ms80165056 |
| Domain verification | Google Workspace | google-site-verification=Mu_pkR0S14exGT0 |
| Entra ID | Microsoft 365 | Entra-ID-Tenant (Managed) |
MX servers
| Pref | Host | IP | Network | Country | TLSA |
|---|---|---|---|---|---|
| 10 | mxb-002ed801.gslb.pphosted.com | 66.159.234.221 | AS52129 PROOFPOINT-ASN-EU - Proofpoint, Inc. | US | – |
| 10 | mxa-002ed801.gslb.pphosted.com | 66.159.234.221 | AS52129 PROOFPOINT-ASN-EU - Proofpoint, Inc. | US | – |
SPF
v=spf1 include:hotelplan.net include:spf.migros.ch include:spf.umantis.com include:spf.protection.outlook.com include:mail.zendesk.com -all- all
-all- DNS lookups
- 10 / 10
- Includes
hotelplan.netspf.migros.chspf.umantis.comspf.protection.outlook.commail.zendesk.com- Detected sending services
- Proofpoint, Microsoft 365, Zendesk
DMARC
v=DMARC1; p=none; rua=mailto:dmarc@hotelplan.com; ruf=mailto:dmarc@hotelplan.com; fo=1- Policy
- p=none
- Subdomains (sp)
- inherits p=none
- Share (pct)
- 100 %
- Alignment DKIM/SPF
- relaxed / relaxed
- Aggregate reports (rua)
dmarc@hotelplan.com- Forensic reports (ruf)
dmarc@hotelplan.com
DKIM
| Selector | Key | delegated to |
|---|---|---|
selector1 | RSA 2048 | selector1-hotelplan-com._domainkey.hotelplangroup.n-v1.dkim.mail.microsoft |
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 365GoogleAppleDocuSignOneTrustCanva
History
- Score 51 · DMARC none
Raw data
hotelplan.com. IN MX 10 mxb-002ed801.gslb.pphosted.com.
hotelplan.com. IN MX 10 mxa-002ed801.gslb.pphosted.com.
hotelplan.com. IN TXT "v=spf1 include:hotelplan.net include:spf.migros.ch include:spf.umantis.com include:spf.protection.outlook.com include:mail.zendesk.com -all"
_dmarc.hotelplan.com. IN TXT "v=DMARC1; p=none; rua=mailto:dmarc@hotelplan.com; ruf=mailto:dmarc@hotelplan.com; fo=1"