BLS
bls.ch
- Industry
- Transport & logistics
- Headquarters
- Bern, Bern
- Type
- public
- Employees (approx.)
- 3,500
- 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.: 59.9 ▲ 4.1
- Canton avg.: 53.1 ▲ 10.9
- Overall avg.: 53.5 ▲ 10.5
- Rank 25 of 67 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: US
- Detection confidence
- 100 / 100
- Microsoft tenant
- Managed · BLS AG
- Tenant region
- EU
Signals (8)
| MX | Microsoft 365 | bls-ch.mail.protection.outlook.com |
|---|---|---|
| SPF | Microsoft 365 | include:spf.protection.outlook.com |
| DKIM | Microsoft 365 | selector2 → selector2-bls-ch._domainkey.bls.onmicrosoft.com |
| Autodiscover | Microsoft 365 | autodiscover.outlook.com |
| Domain verification | Microsoft 365 | MS=ms98635556 |
| Network | Microsoft 365 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation |
| Domain verification | Google Workspace | google-site-verification=jou7xGua07WMgFk |
| Entra ID | Microsoft 365 | Entra-ID-Tenant (Managed) |
MX servers
| Pref | Host | IP | Network | Country | TLSA |
|---|---|---|---|---|---|
| 10 | bls-ch.mail.protection.outlook.com | 52.101.68.29 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US | – |
52.101.68.8 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US | |||
52.101.68.10 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US |
SPF
v=spf1 a:mail2.hostpark.net a:mail.ostendis.ch include:spf.protection.outlook.com include:customers.clickdimensions.com include:_netblocks.bls.ch include:_netblocks2.bls.ch include:_netblocks3.bls.ch include:mail.zendesk.com -all- all
-all- DNS lookups
- 10 / 10
- Includes
spf.protection.outlook.comcustomers.clickdimensions.com_netblocks.bls.ch_netblocks2.bls.ch_netblocks3.bls.chmail.zendesk.com- Detected sending services
- Microsoft 365, Zendesk
DMARC
v=DMARC1; p=quarantine; rua=mailto:dmarc_agg@vali.email; ruf=mailto:sa_dmarc@bls.ch; rf=afrf; sp=quarantine; fo=1; pct=100- Policy
- p=quarantine
- Subdomains (sp)
- quarantine
- Share (pct)
- 100 %
- Alignment DKIM/SPF
- relaxed / relaxed
- Aggregate reports (rua)
dmarc_agg@vali.email- Forensic reports (ruf)
sa_dmarc@bls.ch
DKIM
| Selector | Key | delegated to |
|---|---|---|
k1 | RSA 1024 | dkim.mcsv.net |
selector2 | RSA 1024 | selector2-bls-ch._domainkey.bls.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 365GoogleAppleMeta/FacebookAdobeHave I Been Pwned
History
- Score 64 · DMARC quarantine
Raw data
bls.ch. IN MX 10 bls-ch.mail.protection.outlook.com.
bls.ch. IN TXT "v=spf1 a:mail2.hostpark.net a:mail.ostendis.ch include:spf.protection.outlook.com include:customers.clickdimensions.com include:_netblocks.bls.ch include:_netblocks2.bls.ch include:_netblocks3.bls.ch include:mail.zendesk.com -all"
_dmarc.bls.ch. IN TXT "v=DMARC1; p=quarantine; rua=mailto:dmarc_agg@vali.email; ruf=mailto:sa_dmarc@bls.ch; rf=afrf; sp=quarantine; fo=1; pct=100"