Fust
fust.ch
- Industry
- Retail
- Headquarters
- Oberbüren, St. Gallen
- Type
- private
- Employees (approx.)
- 2,000
- Checked on
- 19 October 2026
70/100Grade 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 0 / 5
- Industry avg.: 60.1 ▲ 9.9
- Canton avg.: 52.3 ▲ 17.7
- Overall avg.: 53.5 ▲ 16.5
- Rank 14 of 58 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.
-
!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 · Coop Genossenschaft
- Tenant region
- EU
Signals (7)
| MX | Microsoft 365 | fust-ch.mail.protection.outlook.com |
|---|---|---|
| SPF | Microsoft 365 | include:spf.protection.outlook.com |
| DKIM | Microsoft 365 | selector1 → selector1-fust-ch._domainkey.coopgruppe.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=JNbxTUo3Dd96-H6 |
| Entra ID | Microsoft 365 | Entra-ID-Tenant (Managed) |
MX servers
| Pref | Host | IP | Network | Country | TLSA |
|---|---|---|---|---|---|
| 5 | fust-ch.mail.protection.outlook.com | 52.101.103.36 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US | – |
52.101.185.21 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US | |||
52.101.185.114 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US |
SPF
v=spf1 include:spf.protection.outlook.com include:mail.zendesk.com ip4:95.128.36.98 include:docebosaas.com include:docebopaas.com ip4:194.11.164.0/24 ip4:95.128.36.98 ip6:2001:618:1:140::98 include:emailsrvr.com ip4:80.242.194.36 ip4:92.42.184.212 include:emarsys.us ip4:138.188.166.160/27 ip4:138.188.163.96/28 -all- all
-all- DNS lookups
- 10 / 10
- Includes
spf.protection.outlook.commail.zendesk.comdocebosaas.comdocebopaas.comemailsrvr.comemarsys.us- Detected sending services
- Microsoft 365, Zendesk, SendGrid, Emarsys
- IPv4
- 308 addresses authorised directly
DMARC
v=DMARC1; p=reject;rua=mailto:dmarc_agg@vali.email; ruf=mailto:hostmaster@fust.ch; adkim=r; aspf=r; fo=1;- Policy
- p=reject
- Subdomains (sp)
- inherits p=reject
- Share (pct)
- 100 %
- Alignment DKIM/SPF
- relaxed / relaxed
- Aggregate reports (rua)
dmarc_agg@vali.email- Forensic reports (ruf)
hostmaster@fust.ch
DKIM
| Selector | Key | delegated to |
|---|---|---|
selector1 | RSA 2048 | selector1-fust-ch._domainkey.coopgruppe.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.
GoogleTeamViewer
History
- Score 70 · DMARC reject
Raw data
fust.ch. IN MX 5 fust-ch.mail.protection.outlook.com.
fust.ch. IN TXT "v=spf1 include:spf.protection.outlook.com include:mail.zendesk.com ip4:95.128.36.98 include:docebosaas.com include:docebopaas.com ip4:194.11.164.0/24 ip4:95.128.36.98 ip6:2001:618:1:140::98 include:emailsrvr.com ip4:80.242.194.36 ip4:92.42.184.212 include:emarsys.us ip4:138.188.166.160/27 ip4:138.188.163.96/28 -all"
_dmarc.fust.ch. IN TXT "v=DMARC1; p=reject;rua=mailto:dmarc_agg@vali.email; ruf=mailto:hostmaster@fust.ch; adkim=r; aspf=r; fo=1;"