Gebäudeversicherung Bern
gvb.ch
70/100Grade B
Protection against forged senders: protected
Points per criterion
- MX 10 / 10
- SPF 15 / 15
- DKIM 20 / 20
- DMARC 25 / 25
- DNSSEC 0 / 10
- Transport (MTA-STS/DANE) 0 / 15
- TLS-RPT 0 / 5
- Industry avg.: 58.6 ▲ 11.4
- Canton avg.: 53.1 ▲ 16.9
- Overall avg.: 53.5 ▲ 16.5
- Rank 9 of 35 in the industry
Findings
-
!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.
Who runs the mail?
- Mailbox provider
- Microsoft 365
- Provider jurisdiction
- USA · MX: CH
- Detection confidence
- 84 / 100
- Microsoft tenant
- Managed · Gebäudeversicherung Bern
- Tenant region
- EU
Signals (5)
| SPF | Microsoft 365 | include:spf.protection.outlook.com |
|---|---|---|
| Autodiscover | Microsoft 365 | autodiscover.outlook.com |
| Domain verification | Microsoft 365 | MS=ms52065654 |
| Domain verification | Google Workspace | google-site-verification=FlWX_6kEI1Pe4Gh |
| Entra ID | Microsoft 365 | Entra-ID-Tenant (Managed) |
MX servers
| Pref | Host | IP | Network | Country | TLSA |
|---|---|---|---|---|---|
| 10 | mail1.gvb.ch | 178.211.152.95 | AS201416 GVB - Gebaeudeversicherung Bern (GVB) | CH | – |
| 20 | mail2.gvb.ch | 178.211.152.96 | AS201416 GVB - Gebaeudeversicherung Bern (GVB) | CH | – |
SPF
v=spf1 ip4:178.211.152.0/24 include:spf.protection.outlook.com include:_spf.createsend.com include:mailgun.org -all- all
-all- DNS lookups
- 7 / 10
- Includes
spf.protection.outlook.com_spf.createsend.commailgun.org- Detected sending services
- Microsoft 365, Mailgun
- IPv4
- 256 addresses authorised directly
DMARC
v=DMARC1;p=reject;rua=mailto:d596457f09@rua.easydmarc.eu,mailto:dmarc-report@gvb.ch;ruf=mailto:d596457f09@ruf.easydmarc.eu,mailto:dmarc-report@gvb.ch;ri=86400;fo=1;- Policy
- p=reject
- Subdomains (sp)
- inherits p=reject
- Share (pct)
- 100 %
- Alignment DKIM/SPF
- relaxed / relaxed
- Aggregate reports (rua)
d596457f09@rua.easydmarc.eudmarc-report@gvb.ch- Forensic reports (ruf)
d596457f09@ruf.easydmarc.eudmarc-report@gvb.ch- Report services
- EasyDMARC
DKIM
| Selector | Key | delegated to |
|---|---|---|
cm | RSA 1024 | – |
mail | RSA 2048 | – |
mta | RSA 1024 | – |
mx | RSA 1024 | – |
selector1 | RSA 2048 | – |
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 365GoogleAppleAtlassianMiroTeamViewer
History
- Score 70 · DMARC reject
Raw data
gvb.ch. IN MX 10 mail1.gvb.ch.
gvb.ch. IN MX 20 mail2.gvb.ch.
gvb.ch. IN TXT "v=spf1 ip4:178.211.152.0/24 include:spf.protection.outlook.com include:_spf.createsend.com include:mailgun.org -all"
_dmarc.gvb.ch. IN TXT "v=DMARC1;p=reject;rua=mailto:d596457f09@rua.easydmarc.eu,mailto:dmarc-report@gvb.ch;ruf=mailto:d596457f09@ruf.easydmarc.eu,mailto:dmarc-report@gvb.ch;ri=86400;fo=1;"