Stadt Zug
stadtzug.ch
- Industry
- Municipalities
- Headquarters
- Zug, Zug
- Type
- public
- Population
- 32,160
- FSO no.
- 1711
- 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
- Industry avg.: 50.9 ▲ 19.1
- Canton avg.: 63.2 ▲ 6.8
- Overall avg.: 53.5 ▲ 16.5
- Rank 481 of 2077 in the industry
Findings
-
!SPF close to the 10-lookup limit (10)
One more sending service can break the limit. Flattening or subdomains for third parties create headroom.
-
!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
- 97 / 100
- Microsoft tenant
- Federated · Zuger-Gemeinden
- Tenant region
- EU
- Federated via
login.stadtzug.ch
Signals (4)
| SPF | Microsoft 365 | include:spf.protection.outlook.com |
|---|---|---|
| DKIM | Microsoft 365 | selector1 → selector1-stadtzug-ch._domainkey.zug.onmicrosoft.com |
| Domain verification | Google Workspace | google-site-verification=UYnmZ4PSsY-tfkS |
| Entra ID | Microsoft 365 | Entra-ID-Tenant (Federated) |
MX servers
| Pref | Host | IP | Network | Country | TLSA |
|---|---|---|---|---|---|
| 10 | mail1.zg.ch | 193.134.26.181 | AS51907 CH-ZG - Kanton Zug | CH | – |
| 20 | mail2.zg.ch | 193.134.26.182 | AS51907 CH-ZG - Kanton Zug | CH | – |
SPF
v=spf1 ip4:94.231.81.6 include:spf.zg.ch include:spf.itszug.ch include:_spf.senders.scnem.com include:spf.etermin.net -all- all
-all- DNS lookups
- 10 / 10
- Includes
spf.zg.chspf.itszug.ch_spf.senders.scnem.comspf.etermin.net- Detected sending services
- Microsoft 365
- IPv4
- 1 addresses authorised directly
DMARC
v=DMARC1; p=reject; rua=mailto:dmarc-reports@itszug.ch;- Policy
- p=reject
- Subdomains (sp)
- inherits p=reject
- Share (pct)
- 100 %
- Alignment DKIM/SPF
- relaxed / relaxed
- Aggregate reports (rua)
dmarc-reports@itszug.ch
DKIM
| Selector | Key | delegated to |
|---|---|---|
dkim1 | RSA 1024 | – |
dkim2 | RSA 1024 | – |
k2 | RSA 2048 | dkim2.mcsv.net |
k3 | RSA 2048 | dkim3.mcsv.net |
s1 | RSA 2048 | s1.domainkey.u110181728.wl229.sendgrid.net |
s2 | RSA 2048 | s2.domainkey.u110181728.wl229.sendgrid.net |
selector1 | RSA 2048 | selector1-stadtzug-ch._domainkey.zug.onmicrosoft.com |
selector2 | RSA 2048 | selector2-stadtzug-ch._domainkey.zug.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.
GoogleAppleAtlassianMiro
History
- Score 70 · DMARC reject
Raw data
stadtzug.ch. IN MX 10 mail1.zg.ch.
stadtzug.ch. IN MX 20 mail2.zg.ch.
stadtzug.ch. IN TXT "v=spf1 ip4:94.231.81.6 include:spf.zg.ch include:spf.itszug.ch include:_spf.senders.scnem.com include:spf.etermin.net -all"
_dmarc.stadtzug.ch. IN TXT "v=DMARC1; p=reject; rua=mailto:dmarc-reports@itszug.ch;"