Nidwaldner Kantonalbank
nkb.ch
80/100Grade B
Protection against forged senders: protected
Points per criterion
- MX 10 / 10
- SPF 15 / 15
- DKIM 20 / 20
- DMARC 25 / 25
- DNSSEC 10 / 10
- Transport (MTA-STS/DANE) 0 / 15
- TLS-RPT 0 / 5
- Industry avg.: 54.8 ▲ 25.2
- Canton avg.: 53.2 ▲ 26.8
- Overall avg.: 53.5 ▲ 26.5
- Rank 8 of 98 in the industry
Findings
-
!SPF close to the 10-lookup limit (9)
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.
-
!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 · Nidwaldner Kantonalbank
- Tenant region
- EU
Signals (8)
| MX | Microsoft 365 | nkb-ch.mail.protection.outlook.com |
|---|---|---|
| SPF | Microsoft 365 | include:spf.protection.outlook.com |
| DKIM | Microsoft 365 | selector1 → selector1-nkb-ch._domainkey.nkbprd.y-v1.dkim.mail.microsoft |
| Autodiscover | Microsoft 365 | autodiscover.outlook.com |
| Domain verification | Microsoft 365 | MS=ms14963546 |
| Network | Microsoft 365 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation |
| Domain verification | Google Workspace | google-site-verification=pfyuAEQgoeZP-Bq |
| Entra ID | Microsoft 365 | Entra-ID-Tenant (Managed) |
MX servers
| Pref | Host | IP | Network | Country | TLSA |
|---|---|---|---|---|---|
| 10 | nkb-ch.mail.protection.outlook.com | 52.101.185.13 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US | – |
52.101.185.12 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US | |||
52.101.185.14 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US |
SPF
v=spf1 a:mail01.mychoice.ch a:mail02.mychoice.ch include:spf.amazee.io include:spf2.nkb.ch include:spf-de.emailsignatures365.com include:spf.protection.outlook.com include:_spf.zimpel.de include:myr.is include:spf.brevo.com -all- all
-all- DNS lookups
- 9 / 10
- Includes
spf.amazee.iospf2.nkb.chspf-de.emailsignatures365.comspf.protection.outlook.com_spf.zimpel.demyr.isspf.brevo.com- Detected sending services
- Microsoft 365, Brevo
DMARC
v=DMARC1; p=reject; rua=mailto:dmarcreports@nkb.ch; ruf=mailto:dmarcreports@nkb.ch; fo=1; pct=100;- Policy
- p=reject
- Subdomains (sp)
- inherits p=reject
- Share (pct)
- 100 %
- Alignment DKIM/SPF
- relaxed / relaxed
- Aggregate reports (rua)
dmarcreports@nkb.ch- Forensic reports (ruf)
dmarcreports@nkb.ch
DKIM
| Selector | Key | delegated to |
|---|---|---|
mail | RSA 1024 | – |
selector1 | RSA 2048 | selector1-nkb-ch._domainkey.nkbprd.y-v1.dkim.mail.microsoft |
selector2 | RSA 2048 | selector2-nkb-ch._domainkey.nkbprd.y-v1.dkim.mail.microsoft |
Checked: 100 common selectors. Keys under custom selectors remain invisible.
Transport encryption
- MTA-STS
- missing
- DANE
- missing
- DNSSEC
- active
- TLS-RPT
- missing
- BIMI
- missing
Verified services
From verification records in the domain TXT: services where the domain is verified.
Microsoft 365GoogleAtlassianBrevo
History
- Score 80 · DMARC reject
Raw data
nkb.ch. IN MX 10 nkb-ch.mail.protection.outlook.com.
nkb.ch. IN TXT "v=spf1 a:mail01.mychoice.ch a:mail02.mychoice.ch include:spf.amazee.io include:spf2.nkb.ch include:spf-de.emailsignatures365.com include:spf.protection.outlook.com include:_spf.zimpel.de include:myr.is include:spf.brevo.com -all"
_dmarc.nkb.ch. IN TXT "v=DMARC1; p=reject; rua=mailto:dmarcreports@nkb.ch; ruf=mailto:dmarcreports@nkb.ch; fo=1; pct=100;"