Gebäudeversicherung Luzern
gvl.ch
- Industry
- Public enterprises
- Headquarters
- Luzern, Lucerne
- Type
- public
- Employees (approx.)
- 100
- Checked on
- 19 October 2026
74/100Grade B
Protection against forged senders: largely protected
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.: 64.5 ▲ 9.5
- Canton avg.: 56.6 ▲ 17.4
- Overall avg.: 53.5 ▲ 20.5
- Rank 4 of 10 in the industry
Findings
-
!DMARC without reporting (no rua)
Without aggregate reports it stays invisible who sends in the domain's name.
-
!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.
-
iBIMI logo published
A brand logo for mail clients is published (without a certificate large providers do not show it).
Who runs the mail?
- Mailbox provider
- Microsoft 365
- Provider jurisdiction
- USA · MX: CH
- Detection confidence
- 97 / 100
- Microsoft tenant
- Managed · Gebäudeversicherung Luzern
- Tenant region
- EU
Signals (4)
| SPF | Microsoft 365 | include:spf.protection.outlook.com |
|---|---|---|
| DKIM | Microsoft 365 | selector1 → selector1-gvl-ch._domainkey.ingvl.onmicrosoft.com |
| Domain verification | Google Workspace | google-site-verification=UjPJMfvwfzK7BaC |
| Entra ID | Microsoft 365 | Entra-ID-Tenant (Managed) |
MX servers
| Pref | Host | IP | Network | Country | TLSA |
|---|---|---|---|---|---|
| 10 | mail.gvl.ch | 46.22.31.231 | AS51873 AS-ARCADE - Arcade Solutions AG | CH | – |
SPF
v=spf1 mx ip4:87.239.204.116 ip4:46.22.31.231 ip4:46.22.31.232 ip4:194.124.233.39 ip4:194.124.233.224 ip6:2001:67c:1984::233:224:1 include:spf.protection.outlook.com -all- all
-all- DNS lookups
- 2 / 10
- Includes
spf.protection.outlook.com- Detected sending services
- Microsoft 365
- IPv4
- 5 addresses authorised directly
DMARC
v=DMARC1; p=quarantine; ruf=mailto:informatik@gvl.ch; fo=1- Policy
- p=quarantine
- Subdomains (sp)
- inherits p=quarantine
- Share (pct)
- 100 %
- Alignment DKIM/SPF
- relaxed / relaxed
- Aggregate reports (rua)
- –
- Forensic reports (ruf)
informatik@gvl.ch
DKIM
| Selector | Key | delegated to |
|---|---|---|
selector1 | RSA 1024 | selector1-gvl-ch._domainkey.ingvl.onmicrosoft.com |
selector2 | RSA 1024 | selector2-gvl-ch._domainkey.ingvl.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
- without certificate · Logo
Verified services
From verification records in the domain TXT: services where the domain is verified.
History
- Score 74 · DMARC quarantine
Raw data
gvl.ch. IN MX 10 mail.gvl.ch.
gvl.ch. IN TXT "v=spf1 mx ip4:87.239.204.116 ip4:46.22.31.231 ip4:46.22.31.232 ip4:194.124.233.39 ip4:194.124.233.224 ip6:2001:67c:1984::233:224:1 include:spf.protection.outlook.com -all"
_dmarc.gvl.ch. IN TXT "v=DMARC1; p=quarantine; ruf=mailto:informatik@gvl.ch; fo=1"
default._bimi.gvl.ch. IN TXT "v=BIMI1; l=https://www.gvl.ch/bimi-icon/GVL_Logo.svg"