Kanton Basel-Stadt
bs.ch
- Industry
- Cantonal administrations
- Headquarters
- Basel, Basel-City
- Type
- public
- 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
- Industry avg.: 55.7 ▲ 8.3
- Canton avg.: 57.4 ▲ 6.6
- Overall avg.: 53.5 ▲ 10.5
- Rank 7 of 26 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
- Upstream gateway
- Swisscom Mail Security
- Provider jurisdiction
- USA · MX: CH
- Detection confidence
- 99 / 100
- Microsoft tenant
- Managed · Kanton Basel-Stadt
- Tenant region
- EU
Signals (8)
| SPF | Microsoft 365 | include:spf.protection.outlook.com |
|---|---|---|
| DKIM | Microsoft 365 | selector1 → selector1-bs-ch._domainkey.baselstadt.onmicrosoft.com |
| Domain verification | Microsoft 365 | MS=ms73972802 |
| Domain verification | Google Workspace | google-site-verification=xqgj2GlWU8mNwif |
| MX | Swisscom | mail.swisscom.com |
| SPF | Swisscom | include:spf.swisscom.com |
| Network | Swisscom | AS3303 SWISSCOM - Swisscom (Schweiz) AG |
| Entra ID | Microsoft 365 | Entra-ID-Tenant (Managed) |
MX servers
| Pref | Host | IP | Network | Country | TLSA |
|---|---|---|---|---|---|
| 10 | mail.swisscom.com | 138.188.184.33 | AS3303 SWISSCOM - Swisscom (Schweiz) AG | CH | – |
138.188.176.225 | AS3303 SWISSCOM - Swisscom (Schweiz) AG | CH | |||
| 20 | mail20.swisscom.com | 138.188.184.33 | AS3303 SWISSCOM - Swisscom (Schweiz) AG | CH | – |
| 20 | mail10.swisscom.com | 138.188.176.225 | AS3303 SWISSCOM - Swisscom (Schweiz) AG | CH | – |
SPF
v=spf1 a:spf.bs.ch include:spf.swisscom.com include:spf.crsend.com include:spf.appmail.swisscom.com include:servers.mcsv.net include:_spf.jpberlin.de ip4:193.108.137.0/24 include:newsmailservice.de include:_spfip.oriented.ch include:spf.protection.outlook.com -all- all
-all- DNS lookups
- 10 / 10
- Includes
spf.swisscom.comspf.crsend.comspf.appmail.swisscom.comservers.mcsv.net_spf.jpberlin.denewsmailservice.de_spfip.oriented.chspf.protection.outlook.com- Detected sending services
- Swisscom, Mailchimp/Mandrill, Microsoft 365
- IPv4
- 256 addresses authorised directly
DMARC
v=DMARC1; p=quarantine; rua=mailto:dmarc@bs.ch; ruf=mailto:dmarc@bs.ch; fo=1- Policy
- p=quarantine
- Subdomains (sp)
- inherits p=quarantine
- Share (pct)
- 100 %
- Alignment DKIM/SPF
- relaxed / relaxed
- Aggregate reports (rua)
dmarc@bs.ch- Forensic reports (ruf)
dmarc@bs.ch
DKIM
| Selector | Key | delegated to |
|---|---|---|
k1 | RSA 1024 | dkim.mcsv.net |
mail | RSA 1024 | – |
selector1 | RSA 1024 | selector1-bs-ch._domainkey.baselstadt.onmicrosoft.com |
selector2 | RSA 1024 | selector2-bs-ch._domainkey.baselstadt.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.
Microsoft 365GoogleMeta/FacebookAtlassianCisco WebexBrevo
History
- Score 64 · DMARC quarantine
Raw data
bs.ch. IN MX 10 mail.swisscom.com.
bs.ch. IN MX 20 mail20.swisscom.com.
bs.ch. IN MX 20 mail10.swisscom.com.
bs.ch. IN TXT "v=spf1 a:spf.bs.ch include:spf.swisscom.com include:spf.crsend.com include:spf.appmail.swisscom.com include:servers.mcsv.net include:_spf.jpberlin.de ip4:193.108.137.0/24 include:newsmailservice.de include:_spfip.oriented.ch include:spf.protection.outlook.com -all"
_dmarc.bs.ch. IN TXT "v=DMARC1; p=quarantine; rua=mailto:dmarc@bs.ch; ruf=mailto:dmarc@bs.ch; fo=1"