Gemeinde Spiez

spiez.ch

Industry
Municipalities
Headquarters
Spiez, Bern
Type
public
Population
13,332
FSO no.
768
Checked on
19 October 2026
61/100Grade 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 10 / 10
  • Transport (MTA-STS/DANE) 0 / 15
  • TLS-RPT 0 / 5

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.

  • !External report receiver not authorised

    The authorisation record for an external rua domain is missing (RFC 7489 §7.1); many receivers then send no reports.

  • !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.

Check live in the Mail DNS Check →

Who runs the mail?

Mailbox provider
Microsoft 365
Provider jurisdiction
USA · MX: CH
Detection confidence
97 / 100
Microsoft tenant
Managed · Stadt Thun (GOV)
Tenant region
EU
Signals (3)
SPFMicrosoft 365include:spf.protection.outlook.com
DKIMMicrosoft 365selector1 → selector1-spiez-ch._domainkey.stadtthun.onmicrosoft.com
Entra IDMicrosoft 365Entra-ID-Tenant (Managed)

MX servers

PrefHostIPNetworkCountryTLSA
10 mx2.thun.ch 82.220.26.135 AS9044 SOLNET - BSE Software GmbH CH –
10 mx1.thun.ch 82.220.26.134 AS9044 SOLNET - BSE Software GmbH CH –

SPF

v=spf1 ip4:82.220.26.128/26 ip4:194.56.218.181 mx include:thunersee.ch include:_spf.talus.ch include:spf.protection.outlook.com -all
all
-all
DNS lookups
10 / 10
Includes
thunersee.ch_spf.talus.chspf.protection.outlook.com
Detected sending services
Microsoft 365, HubSpot
IPv4
65 addresses authorised directly

DMARC

v=DMARC1; p=none; sp=none; rua=mailto:fakemail@thun.ch ; ruf=mailto:fakemail@thun.ch; adkim=r; aspf=r; fo=1; pct=10
Policy
p=none
Subdomains (sp)
none
Share (pct)
10 %
Alignment DKIM/SPF
relaxed / relaxed
Aggregate reports (rua)
fakemail@thun.ch
Forensic reports (ruf)
fakemail@thun.ch

DKIM

SelectorKeydelegated to
s2 RSA 2048 s2._domainkey.thun.ch
selector1 RSA 1024 selector1-spiez-ch._domainkey.stadtthun.onmicrosoft.com
selector2 RSA 1024 selector2-spiez-ch._domainkey.stadtthun.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
missing

History

  • Score 61 · DMARC none

All changes of this organisation in the change log →

Raw data
spiez.ch. IN MX 10 mx2.thun.ch.
spiez.ch. IN MX 10 mx1.thun.ch.
spiez.ch. IN TXT "v=spf1 ip4:82.220.26.128/26 ip4:194.56.218.181 mx include:thunersee.ch include:_spf.talus.ch include:spf.protection.outlook.com -all"
_dmarc.spiez.ch. IN TXT "v=DMARC1; p=none; sp=none; rua=mailto:fakemail@thun.ch ; ruf=mailto:fakemail@thun.ch; adkim=r; aspf=r; fo=1; pct=10"

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