Pädagogische Hochschule Thurgau
phtg.ch
- Industry
- Universities & research
- Headquarters
- Kreuzlingen, Thurgau
- Type
- public
- Checked on
- 19 October 2026
81/100Grade B
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) 12 / 15
- TLS-RPT 5 / 5
- Industry avg.: 57.9 ▲ 23.1
- Canton avg.: 41.3 ▲ 39.7
- Overall avg.: 53.5 ▲ 27.5
- Rank 1 of 58 in the industry
Findings
-
!SPF close to the 10-lookup limit (8)
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.
-
iBIMI logo published
A brand logo for mail clients is published (without a certificate large providers do not show it).
Who runs the mail?
- Mailbox provider
- Microsoft 365
- Provider jurisdiction
- USA · MX: CH
- Detection confidence
- 99 / 100
- Microsoft tenant
- Managed · Pädagogische Hochschule Thurgau
- Tenant region
- EU
Signals (5)
| SPF | Microsoft 365 | include:spf.protection.outlook.com |
|---|---|---|
| DKIM | Microsoft 365 | selector1 → selector1-phtg-ch._domainkey.phtg.onmicrosoft.com |
| Domain verification | Microsoft 365 | MS=ms90741899 |
| Domain verification | Google Workspace | google-site-verification=v8CWPS67RnLrisA |
| Entra ID | Microsoft 365 | Entra-ID-Tenant (Managed) |
MX servers
| Pref | Host | IP | Network | Country | TLSA |
|---|---|---|---|---|---|
| 5 | mail.phtg.ch | 195.176.25.42 | AS559 Switch - SWITCH | CH | – |
SPF
v=spf1 ip4:195.176.25.42 ip4:195.176.26.102 ip4:91.217.141.0/24 a:mail.phtg.ch a:bre.globalpark.com a:mail01.refline.ch a:mail02.refline.ch include:spf.protection.outlook.com include:spf.crsend.com include:eu.mailgun.org -all- all
-all- DNS lookups
- 8 / 10
- Includes
spf.protection.outlook.comspf.crsend.comeu.mailgun.org- Detected sending services
- Microsoft 365, Mailgun
- IPv4
- 258 addresses authorised directly
DMARC
v=DMARC1; p=quarantine; rua=mailto:falsepositive@phtg.ch; ruf=mailto:falsepositive@phtg.ch; adkim=r; aspf=r- Policy
- p=quarantine
- Subdomains (sp)
- inherits p=quarantine
- Share (pct)
- 100 %
- Alignment DKIM/SPF
- relaxed / relaxed
- Aggregate reports (rua)
falsepositive@phtg.ch- Forensic reports (ruf)
falsepositive@phtg.ch
DKIM
| Selector | Key | delegated to |
|---|---|---|
dkim | RSA 2048 | – |
selector1 | RSA 1024 | selector1-phtg-ch._domainkey.phtg.onmicrosoft.com |
selector2 | RSA 2048 | selector2-phtg-ch._domainkey.phtg.onmicrosoft.com |
Checked: 100 common selectors. Keys under custom selectors remain invisible.
Transport encryption
- MTA-STS
- Mode: enforce · max_age: 86,400 s · covers all MX: yes
- mx
mail.phtg.ch- DANE
- missing
- DNSSEC
- missing
- TLS-RPT
mailto:falsepositive@phtg.ch- BIMI
- without certificate · Logo
Verified services
From verification records in the domain TXT: services where the domain is verified.
Microsoft 365GoogleAppleAdobe
History
- Score 81 · DMARC quarantine
Raw data
phtg.ch. IN MX 5 mail.phtg.ch.
phtg.ch. IN TXT "v=spf1 ip4:195.176.25.42 ip4:195.176.26.102 ip4:91.217.141.0/24 a:mail.phtg.ch a:bre.globalpark.com a:mail01.refline.ch a:mail02.refline.ch include:spf.protection.outlook.com include:spf.crsend.com include:eu.mailgun.org -all"
_dmarc.phtg.ch. IN TXT "v=DMARC1; p=quarantine; rua=mailto:falsepositive@phtg.ch; ruf=mailto:falsepositive@phtg.ch; adkim=r; aspf=r"
_mta-sts.phtg.ch. IN TXT "v=STSv1; id=20210426171800Z"
_smtp._tls.phtg.ch. IN TXT "v=TLSRPTv1; rua=mailto:falsepositive@phtg.ch"
default._bimi.phtg.ch. IN TXT "v=BIMI1; l=https://mta-sts.phtg.ch/HeaderIcon.svg"