Gemeinde Brügg

bruegg.ch

Industry
Municipalities
Headquarters
Brügg, Bern
Type
public
Population
4,388
FSO no.
733
Checked on
19 October 2026
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

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.

Check live in the Mail DNS Check →

Who runs the mail?

Mailbox provider
Microsoft 365
Upstream gateway
Hornetsecurity
Provider jurisdiction
USA · MX: DE
Detection confidence
100 / 100
Microsoft tenant
Managed · Gemeindeverwaltung Brügg
Tenant region
EU
Signals (5)
SPFMicrosoft 365include:spf.protection.outlook.com
DKIMMicrosoft 365selector1 → selector1-bruegg-ch._domainkey.gemeindebruegg.onmicrosoft.com
AutodiscoverMicrosoft 365autodiscover.outlook.com
Domain verificationMicrosoft 365MS=ms57526102
Entra IDMicrosoft 365Entra-ID-Tenant (Managed)

MX servers

PrefHostIPNetworkCountryTLSA
10 mx-cluster01-hz13.hornetsecurity.ch 94.100.143.100 AS25091 IP-Max - IP-Max SA DE –
20 mx-cluster02-hz13.hornetsecurity.ch 94.100.143.100 AS25091 IP-Max - IP-Max SA DE –
30 mx-cluster03-hz13.hornetsecurity.ch 94.100.143.100 AS25091 IP-Max - IP-Max SA DE –
40 mx-cluster04-hz13.hornetsecurity.ch 94.100.143.100 AS25091 IP-Max - IP-Max SA DE –

SPF

v=spf1 ip4:213.142.162.16/28 a:mail.evard.ch include:_spf.talus.ch include:_spf.sui-inter.net include:spf.mailjet.com include:spf.protection.outlook.com include:spf.hornetsecurity.com -all
all
-all
DNS lookups
6 / 10
Includes
_spf.talus.ch_spf.sui-inter.netspf.mailjet.comspf.protection.outlook.comspf.hornetsecurity.com
Detected sending services
Mailjet, Microsoft 365, Hornetsecurity
IPv4
16 addresses authorised directly

DMARC

v=DMARC1; p=reject; adkim=r; aspf=r; rua=mailto:dmarc@evard.ch
Policy
p=reject
Subdomains (sp)
inherits p=reject
Share (pct)
100 %
Alignment DKIM/SPF
relaxed / relaxed
Aggregate reports (rua)
dmarc@evard.ch

DKIM

SelectorKeydelegated to
dkim1 RSA 2048 –
mailjet RSA 1024 –
selector1 RSA 2048 selector1-bruegg-ch._domainkey.gemeindebruegg.onmicrosoft.com
selector2 RSA 2048 selector2-bruegg-ch._domainkey.gemeindebruegg.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 365

History

  • Score 70 · DMARC reject

All changes of this organisation in the change log →

Raw data
bruegg.ch. IN MX 10 mx-cluster01-hz13.hornetsecurity.ch.
bruegg.ch. IN MX 20 mx-cluster02-hz13.hornetsecurity.ch.
bruegg.ch. IN MX 30 mx-cluster03-hz13.hornetsecurity.ch.
bruegg.ch. IN MX 40 mx-cluster04-hz13.hornetsecurity.ch.
bruegg.ch. IN TXT "v=spf1 ip4:213.142.162.16/28 a:mail.evard.ch include:_spf.talus.ch include:_spf.sui-inter.net include:spf.mailjet.com include:spf.protection.outlook.com include:spf.hornetsecurity.com -all"
_dmarc.bruegg.ch. IN TXT "v=DMARC1; p=reject; adkim=r; aspf=r; rua=mailto:dmarc@evard.ch"

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