Stadt Winterthur
win.ch
- Industry
- Municipalities
- Headquarters
- Winterthur, Zurich
- Type
- public
- Population
- 120,741
- FSO no.
- 230
- Checked on
- 19 October 2026
51/100Grade 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 0 / 10
- Transport (MTA-STS/DANE) 0 / 15
- TLS-RPT 0 / 5
- Industry avg.: 50.9 ▲ 0.1
- Canton avg.: 53 ▼ 2
- Overall avg.: 53.5 ▼ 2.5
- Rank 1094 of 2077 in the industry
Findings
-
✕DMARC in monitoring mode only (p=none)
p=none provides reports but does not reject a single forgery. The goal is p=reject.
-
!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
- Swisscom
- Upstream gateway
- Swisscom Mail Security
- Provider jurisdiction
- Switzerland · MX: US, CH
- Detection confidence
- 92 / 100
- Microsoft tenant
- Federated · Stadt Winterthur
- Tenant region
- EU
- Federated via
sts.win.ch
Signals (7)
| Domain verification | Microsoft 365 | MS=ms37491377 |
|---|---|---|
| Domain verification | Google Workspace | google-site-verification=eyMbtbarPheRgnG |
| Network | Amazon | AS16509 AMAZON-02 - Amazon.com, Inc. |
| MX | Swisscom | mx02.mailsecurity.swisscom.com |
| SPF | Swisscom | include:mailsecurity.swisscom.com |
| Network | Swisscom | AS3303 SWISSCOM - Swisscom (Schweiz) AG |
| Entra ID | Microsoft 365 | Entra-ID-Tenant (Federated) |
MX servers
| Pref | Host | IP | Network | Country | TLSA |
|---|---|---|---|---|---|
| 10 | win-ch.in.tmes.trendmicro.eu | 18.185.115.146 | AS16509 AMAZON-02 - Amazon.com, Inc. | US | – |
18.185.115.145 | AS16509 AMAZON-02 - Amazon.com, Inc. | US | |||
18.185.115.147 | AS16509 AMAZON-02 - Amazon.com, Inc. | US | |||
| 20 | mx02.mailsecurity.swisscom.com | 193.135.100.29 | AS3303 SWISSCOM - Swisscom (Schweiz) AG | CH | – |
SPF
v=spf1 include:_spf.win.ch include:mailsecurity.swisscom.com include:spf.tmes.trendmicro.eu -all- all
-all- DNS lookups
- 7 / 10
- Includes
_spf.win.chmailsecurity.swisscom.comspf.tmes.trendmicro.eu- Detected sending services
- Mailchimp/Mandrill, Swisscom
DMARC
v=DMARC1; p=none; rua=mailto:dkim-report@win.ch; ruf=mailto:dkim-report@win.ch; fo=1; pct=100;- Policy
- p=none
- Subdomains (sp)
- inherits p=none
- Share (pct)
- 100 %
- Alignment DKIM/SPF
- relaxed / relaxed
- Aggregate reports (rua)
dkim-report@win.ch- Forensic reports (ruf)
dkim-report@win.ch
DKIM
| Selector | Key | delegated to |
|---|---|---|
k2 | RSA 2048 | dkim2.mcsv.net |
k3 | RSA 2048 | dkim3.mcsv.net |
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 365GoogleAppleAtlassianAdobeCisco Webex
History
- Score 51 · DMARC none
Raw data
win.ch. IN MX 10 win-ch.in.tmes.trendmicro.eu.
win.ch. IN MX 20 mx02.mailsecurity.swisscom.com.
win.ch. IN TXT "v=spf1 include:_spf.win.ch include:mailsecurity.swisscom.com include:spf.tmes.trendmicro.eu -all"
_dmarc.win.ch. IN TXT "v=DMARC1; p=none; rua=mailto:dkim-report@win.ch; ruf=mailto:dkim-report@win.ch; fo=1; pct=100;"