Stadt Sursee

stadtsursee.ch

Industry
Municipalities
Headquarters
Sursee, Lucerne
Type
public
Population
11,118
FSO no.
1103
Checked on
19 October 2026
64/100Grade C

Protection against forged senders: largely protected

Points per criterion

  • MX 10 / 10
  • SPF 15 / 15
  • DKIM 20 / 20
  • DMARC 19 / 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
Provider jurisdiction
USA · MX: US
Detection confidence
100 / 100
Microsoft tenant
Managed · Stadt Sursee
Tenant region
EU
Signals (7)
MXMicrosoft 365stadtsursee-ch.mail.protection.outlook.com
SPFMicrosoft 365include:spf.protection.outlook.com
DKIMMicrosoft 365selector2 → selector2-stadtsursee-ch._domainkey.stadtsurseech.onmicrosoft.com
AutodiscoverMicrosoft 365autodiscover.outlook.com
NetworkMicrosoft 365AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation
SPFSwiss hosterinclude:spf.mail.hostpoint.ch
Entra IDMicrosoft 365Entra-ID-Tenant (Managed)

MX servers

PrefHostIPNetworkCountryTLSA
20 stadtsursee-ch.mail.protection.outlook.com 52.101.185.13 AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation US –
52.101.187.1 AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation US
52.101.185.14 AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation US

SPF

v=spf1 a mx include:spf.mail.hostpoint.ch include:_spf.i-web.ch include:spf.protection.outlook.com ip4:37.128.181.146 include:_spf.psm.knowbe4.com -all
all
-all
DNS lookups
6 / 10
Includes
spf.mail.hostpoint.ch_spf.i-web.chspf.protection.outlook.com_spf.psm.knowbe4.com
Detected sending services
Hostpoint, Microsoft 365
IPv4
1 addresses authorised directly

DMARC

v=DMARC1; p=quarantine; rua=dmarc_agg@vali.email; ruf=dmarc_forensic@vali.email; pct=100; fo=0
Policy
p=quarantine
Subdomains (sp)
inherits p=quarantine
Share (pct)
100 %
Alignment DKIM/SPF
relaxed / relaxed
Aggregate reports (rua)
dmarc_agg@vali.email
Forensic reports (ruf)
dmarc_forensic@vali.email

DKIM

SelectorKeydelegated to
selector2 RSA 1024 selector2-stadtsursee-ch._domainkey.stadtsurseech.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

History

  • Score 64 · DMARC quarantine

All changes of this organisation in the change log →

Raw data
stadtsursee.ch. IN MX 20 stadtsursee-ch.mail.protection.outlook.com.
stadtsursee.ch. IN TXT "v=spf1 a mx include:spf.mail.hostpoint.ch include:_spf.i-web.ch include:spf.protection.outlook.com ip4:37.128.181.146 include:_spf.psm.knowbe4.com -all"
_dmarc.stadtsursee.ch. IN TXT "v=DMARC1; p=quarantine; rua=dmarc_agg@vali.email; ruf=dmarc_forensic@vali.email; pct=100; fo=0"

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