Stadt Dübendorf
duebendorf.ch
- Industry
- Municipalities
- Headquarters
- Dübendorf, Zurich
- Type
- public
- Population
- 33,214
- FSO no.
- 191
- 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 1086 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.
-
!SPF close to the 10-lookup limit (10)
One more sending service can break the limit. Flattening or subdomains for third parties create headroom.
-
!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
- Upstream gateway
- Trend Micro
- Provider jurisdiction
- USA · MX: US
- Detection confidence
- 90 / 100
- Microsoft tenant
- Managed · Stadtverwaltung Dübendorf
- Tenant region
- EU
Signals (5)
| SPF | Microsoft 365 | include:spf.protection.outlook.com |
|---|---|---|
| Domain verification | Microsoft 365 | MS=ms51899919 |
| Domain verification | Google Workspace | google-site-verification=pGAkV3iq0YGkssJ |
| Network | Amazon | AS16509 AMAZON-02 - Amazon.com, Inc. |
| Entra ID | Microsoft 365 | Entra-ID-Tenant (Managed) |
MX servers
| Pref | Host | IP | Network | Country | TLSA |
|---|---|---|---|---|---|
| 10 | stadtduebendorf.in.tmes.trendmicro.eu | 18.185.115.145 | AS16509 AMAZON-02 - Amazon.com, Inc. | US | – |
18.185.115.147 | AS16509 AMAZON-02 - Amazon.com, Inc. | US | |||
18.185.115.146 | AS16509 AMAZON-02 - Amazon.com, Inc. | US |
SPF
v=spf1 mx include:speedadmin.dk ip4:80.242.195.146 ip4:80.242.195.157 include:spf.crsend.com include:spf.abxsec.com include:_spf.i-web.ch include:spf.abacuscity.ch include:spf.bestview.ch include:spf.tmes.trendmicro.eu -all- all
-all- DNS lookups
- 10 / 10
- Includes
speedadmin.dkspf.crsend.comspf.abxsec.com_spf.i-web.chspf.abacuscity.chspf.bestview.chspf.tmes.trendmicro.eu- Detected sending services
- Microsoft 365
- IPv4
- 2 addresses authorised directly
DMARC
v=DMARC1; p=none; pct=10; rua=mailto:dmarc.helpdesk@duebendorf.ch; ruf=mailto:dmarc.helpdesk@duebendorf.ch; fo=1;- Policy
- p=none
- Subdomains (sp)
- inherits p=none
- Share (pct)
- 10 %
- Alignment DKIM/SPF
- relaxed / relaxed
- Aggregate reports (rua)
dmarc.helpdesk@duebendorf.ch- Forensic reports (ruf)
dmarc.helpdesk@duebendorf.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 365GoogleAppleLinkedIn
History
- Score 51 · DMARC none
Raw data
duebendorf.ch. IN MX 10 stadtduebendorf.in.tmes.trendmicro.eu.
duebendorf.ch. IN TXT "v=spf1 mx include:speedadmin.dk ip4:80.242.195.146 ip4:80.242.195.157 include:spf.crsend.com include:spf.abxsec.com include:_spf.i-web.ch include:spf.abacuscity.ch include:spf.bestview.ch include:spf.tmes.trendmicro.eu -all"
_dmarc.duebendorf.ch. IN TXT "v=DMARC1; p=none; pct=10; rua=mailto:dmarc.helpdesk@duebendorf.ch; ruf=mailto:dmarc.helpdesk@duebendorf.ch; fo=1;"