Stadt Olten
olten.ch
- Industry
- Municipalities
- Headquarters
- Olten, Solothurn
- Type
- public
- Population
- 19,265
- FSO no.
- 2581
- Checked on
- 19 October 2026
44/100Grade C
Protection against forged senders: largely protected
Points per criterion
- MX 10 / 10
- SPF 15 / 15
- DKIM 0 / 20
- DMARC 19 / 25
- DNSSEC 0 / 10
- Transport (MTA-STS/DANE) 0 / 15
- TLS-RPT 0 / 5
- Industry avg.: 50.9 ▼ 6.9
- Canton avg.: 47.9 ▼ 3.9
- Overall avg.: 53.5 ▼ 9.5
- Rank 1380 of 2077 in the industry
Findings
-
!SPF close to the 10-lookup limit (8)
One more sending service can break the limit. Flattening or subdomains for third parties create headroom.
-
!No DKIM key found
No key was found under more than 100 common selectors. A custom selector is possible, but without DKIM there is no cryptographic sender check.
-
!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
- Proofpoint
- Provider jurisdiction
- USA · MX: US, GB
- Detection confidence
- 88 / 100
- Microsoft tenant
- Managed · Einwohnergemeinde Olten
- Tenant region
- EU
Signals (2)
| SPF | Microsoft 365 | include:spf.protection.outlook.com |
|---|---|---|
| Entra ID | Microsoft 365 | Entra-ID-Tenant (Managed) |
MX servers
| Pref | Host | IP | Network | Country | TLSA |
|---|---|---|---|---|---|
| 5 | mx1-eu1.ppe-hosted.com | 91.209.104.155 | AS52129 PROOFPOINT-ASN-EU - Proofpoint, Inc. | US | – |
185.132.181.16 | AS52129 PROOFPOINT-ASN-EU - Proofpoint, Inc. | GB | |||
| 50 | mx2-eu1.ppe-hosted.com | 185.132.181.17 | AS52129 PROOFPOINT-ASN-EU - Proofpoint, Inc. | GB | – |
91.209.104.156 | AS52129 PROOFPOINT-ASN-EU - Proofpoint, Inc. | US |
SPF
v=spf1 mx ip4:164.128.174.20 ip4:193.135.131.203 a:dispatch-eu.ppe-hosted.com include:_spf.i-web.ch include:spf1.egeko.ch include:spf.protection.outlook.com include:psm.knowbe4.com include:mx.dvbern.ch include:spf.omcomputer.ch -all- all
-all- DNS lookups
- 8 / 10
- Includes
_spf.i-web.chspf1.egeko.chspf.protection.outlook.compsm.knowbe4.commx.dvbern.chspf.omcomputer.ch- Detected sending services
- Microsoft 365
- IPv4
- 2 addresses authorised directly
DMARC
v=DMARC1; p=quarantine; pct=100; aspf=r; rua=mailto:security@olten.ch- Policy
- p=quarantine
- Subdomains (sp)
- inherits p=quarantine
- Share (pct)
- 100 %
- Alignment DKIM/SPF
- relaxed / relaxed
- Aggregate reports (rua)
security@olten.ch
DKIM
No DKIM key found
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 44 · DMARC quarantine
Raw data
olten.ch. IN MX 5 mx1-eu1.ppe-hosted.com.
olten.ch. IN MX 50 mx2-eu1.ppe-hosted.com.
olten.ch. IN TXT "v=spf1 mx ip4:164.128.174.20 ip4:193.135.131.203 a:dispatch-eu.ppe-hosted.com include:_spf.i-web.ch include:spf1.egeko.ch include:spf.protection.outlook.com include:psm.knowbe4.com include:mx.dvbern.ch include:spf.omcomputer.ch -all"
_dmarc.olten.ch. IN TXT "v=DMARC1; p=quarantine; pct=100; aspf=r; rua=mailto:security@olten.ch"