Thurgauer Kantonalbank
tkb.ch
59/100Grade C
Protection against forged senders: not protected (monitoring only)
Points per criterion
- MX 10 / 10
- SPF 13 / 15
- DKIM 20 / 20
- DMARC 6 / 25
- DNSSEC 10 / 10
- Transport (MTA-STS/DANE) 0 / 15
- TLS-RPT 0 / 5
- Industry avg.: 54.8 ▲ 4.2
- Canton avg.: 41.3 ▲ 17.7
- Overall avg.: 53.5 ▲ 5.5
- Rank 46 of 98 in the industry
Findings
-
✕DMARC in monitoring mode only (p=none)
p=none provides reports but does not reject a single forgery. The goal is p=reject.
-
!DMARC without reporting (no rua)
Without aggregate reports it stays invisible who sends in the domain's name.
-
!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
- Swisscom
- Upstream gateway
- Swisscom Mail Security
- Provider jurisdiction
- Switzerland · MX: CH
- Detection confidence
- 92 / 100
- Microsoft tenant
- Federated · Thurgauer Kantonalbank
- Tenant region
- EU
- Federated via
sts.tkb.ch
Signals (7)
| Domain verification | Microsoft 365 | MS=ms82910057 |
|---|---|---|
| Domain verification | Google Workspace | google-site-verification=9hj4OXq3g6n9WOS |
| SPF | Amazon | include:amazonses.com |
| 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 (Federated) |
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 ip4:62.240.192.48 ip4:194.9.85.135 ip4:62.240.192.49 ip4:195.141.17.27 include:spf.swisscom.com include:mailing.eqs.com include:amazonses.com include:spf.imc-hosting.com ~all- all
~all- DNS lookups
- 5 / 10
- Includes
spf.swisscom.commailing.eqs.comamazonses.comspf.imc-hosting.com- Detected sending services
- Swisscom, Mailjet, Amazon SES
- IPv4
- 4 addresses authorised directly
DMARC
v=DMARC1;p=none- Policy
- p=none
- Subdomains (sp)
- inherits p=none
- Share (pct)
- 100 %
- Alignment DKIM/SPF
- relaxed / relaxed
- Aggregate reports (rua)
- –
DKIM
| Selector | Key | delegated to |
|---|---|---|
mailjet | RSA 1024 | – |
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 365GoogleMiroTeamViewer
History
- Score 59 · DMARC none
Raw data
tkb.ch. IN MX 10 mail.swisscom.com.
tkb.ch. IN MX 20 mail20.swisscom.com.
tkb.ch. IN MX 20 mail10.swisscom.com.
tkb.ch. IN TXT "v=spf1 ip4:62.240.192.48 ip4:194.9.85.135 ip4:62.240.192.49 ip4:195.141.17.27 include:spf.swisscom.com include:mailing.eqs.com include:amazonses.com include:spf.imc-hosting.com ~all"
_dmarc.tkb.ch. IN TXT "v=DMARC1;p=none"