BKW
bkw.ch
75/100Grade B
Protection against forged senders: protected
Points per criterion
- MX 10 / 10
- SPF 15 / 15
- DKIM 20 / 20
- DMARC 25 / 25
- DNSSEC 0 / 10
- Transport (MTA-STS/DANE) 0 / 15
- TLS-RPT 5 / 5
- Industry avg.: 60.5 ▲ 14.5
- Canton avg.: 53.1 ▲ 21.9
- Overall avg.: 53.5 ▲ 21.5
- Rank 4 of 43 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.
Who runs the mail?
- Mailbox provider
- Microsoft 365
- Provider jurisdiction
- USA · MX: US
- Detection confidence
- 100 / 100
- Microsoft tenant
- Managed · BKW
- Tenant region
- EU
Signals (7)
| MX | Microsoft 365 | bkw-ch.mail.protection.outlook.com |
|---|---|---|
| SPF | Microsoft 365 | include:spf.protection.outlook.com |
| DKIM | Microsoft 365 | selector1 → selector1-bkw-ch._domainkey.bkwfmbenergie.onmicrosoft.com |
| Autodiscover | Microsoft 365 | autodiscover.outlook.com |
| Network | Microsoft 365 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation |
| Domain verification | Google Workspace | google-site-verification=7Wiq2Im-jAElUZC |
| Entra ID | Microsoft 365 | Entra-ID-Tenant (Managed) |
MX servers
| Pref | Host | IP | Network | Country | TLSA |
|---|---|---|---|---|---|
| 0 | bkw-ch.mail.protection.outlook.com | 52.101.73.145 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US | – |
52.101.73.155 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US | |||
52.101.68.27 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US |
SPF
v=spf1 ip4:159.232.246.132 ip4:159.232.246.133 include:spf.protection.outlook.com include:_spf1.bkw.ch include:_spf2.bkw.ch include:_spf3.bkw.ch include:_spf.messagegears.net include:spf.eu.exclaimer.net include:_spf-dc12.successfactors.com -all- all
-all- DNS lookups
- 10 / 10
- Includes
spf.protection.outlook.com_spf1.bkw.ch_spf2.bkw.ch_spf3.bkw.ch_spf.messagegears.netspf.eu.exclaimer.net_spf-dc12.successfactors.com- Detected sending services
- Microsoft 365, Brevo, SAP
- IPv4
- 2 addresses authorised directly
DMARC
v=DMARC1;p=reject;sp=reject;rua=mailto:uqlw4b1f@rua.eu.dmarcmanager.app;ruf=mailto:uqlw4b1f@ruf.eu.dmarcmanager.app;- Policy
- p=reject
- Subdomains (sp)
- reject
- Share (pct)
- 100 %
- Alignment DKIM/SPF
- relaxed / relaxed
- Aggregate reports (rua)
uqlw4b1f@rua.eu.dmarcmanager.app- Forensic reports (ruf)
uqlw4b1f@ruf.eu.dmarcmanager.app
DKIM
| Selector | Key | delegated to |
|---|---|---|
default | RSA 2048 | default._domainkey.tocco.ch |
k1 | RSA 1024 | dkim.mcsv.net |
key1 | RSA 2048 | key1._domainkey.sponsor.com |
key2 | RSA 2048 | key2._domainkey.sponsor.com |
mail | RSA 1024 | – |
mailjet | RSA 1024 | – |
selector1 | RSA 2048 | selector1-bkw-ch._domainkey.bkwfmbenergie.onmicrosoft.com |
Checked: 100 common selectors. Keys under custom selectors remain invisible.
Transport encryption
- MTA-STS
- missing
- DANE
- missing
- DNSSEC
- missing
- TLS-RPT
mailto:uqlw4b1f@tls.eu.dmarcian.com- BIMI
- missing
Verified services
From verification records in the domain TXT: services where the domain is verified.
GoogleAppleAtlassianHave I Been PwnedMiroBrevoNotionPostmanTeamViewer
History
- Score 75 · DMARC reject
Raw data
bkw.ch. IN MX 0 bkw-ch.mail.protection.outlook.com.
bkw.ch. IN TXT "v=spf1 ip4:159.232.246.132 ip4:159.232.246.133 include:spf.protection.outlook.com include:_spf1.bkw.ch include:_spf2.bkw.ch include:_spf3.bkw.ch include:_spf.messagegears.net include:spf.eu.exclaimer.net include:_spf-dc12.successfactors.com -all"
_dmarc.bkw.ch. IN TXT "v=DMARC1;p=reject;sp=reject;rua=mailto:uqlw4b1f@rua.eu.dmarcmanager.app;ruf=mailto:uqlw4b1f@ruf.eu.dmarcmanager.app;"
_smtp._tls.bkw.ch. IN TXT "v=TLSRPTv1; rua=mailto:uqlw4b1f@tls.eu.dmarcian.com"