Certas
certas.ch
- Industry
- Staffing & facility services
- Headquarters
- Zürich, Zurich
- Type
- private
- Employees (approx.)
- 200
- Checked on
- 19 October 2026
Protection against forged senders: not protected (monitoring only)
Points per criterion
- MX 10 / 10
- SPF 13 / 15
- DKIM 0 / 20
- DMARC 6 / 25
- DNSSEC 0 / 10
- Transport (MTA-STS/DANE) 0 / 15
- TLS-RPT 0 / 5
- Industry avg.: 60.9 ▼ 31.9
- Canton avg.: 53 ▼ 24
- Overall avg.: 53.5 ▼ 24.5
- Rank 15 of 15 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.
-
!SPF close to the 10-lookup limit (8)
One more sending service can break the limit. Flattening or subdomains for third parties create headroom.
-
!DMARC without reporting (no rua)
Without aggregate reports it stays invisible who sends in the domain's name.
-
!No DKIM key found
No key was found under more than 100 common selectors. A custom selector is possible, but without DKIM there is no cryptographic sender check.
-
!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 · Swiss Securitas Group
- Tenant region
- EU
Signals (6)
| MX | Microsoft 365 | certas-ch.mail.protection.outlook.com |
|---|---|---|
| SPF | Microsoft 365 | include:spf.protection.outlook.com |
| Domain verification | Microsoft 365 | MS=ms20805166 |
| Network | Microsoft 365 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation |
| SPF | Swisscom | include:spf.swisscom.com |
| Entra ID | Microsoft 365 | Entra-ID-Tenant (Managed) |
MX servers
| Pref | Host | IP | Network | Country | TLSA |
|---|---|---|---|---|---|
| 0 | certas-ch.mail.protection.outlook.com | 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 | |||
52.101.187.1 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US |
SPF
v=spf1 ip4:193.222.94.116 ip4:193.222.94.117 a:relay.ssgnet.net include:spf.webstyle.ch include:spf.swisscom.com include:spf.abacus.ch include:spf.cs2.ch include:spf.protection.outlook.com ~all- all
~all- DNS lookups
- 8 / 10
- Includes
spf.webstyle.chspf.swisscom.comspf.abacus.chspf.cs2.chspf.protection.outlook.com- Detected sending services
- Swisscom, Microsoft 365
- IPv4
- 2 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
No DKIM key found
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.
Microsoft 365AppleCisco WebexHave I Been Pwned
History
- Score 29 · DMARC none
Raw data
certas.ch. IN MX 0 certas-ch.mail.protection.outlook.com.
certas.ch. IN TXT "v=spf1 ip4:193.222.94.116 ip4:193.222.94.117 a:relay.ssgnet.net include:spf.webstyle.ch include:spf.swisscom.com include:spf.abacus.ch include:spf.cs2.ch include:spf.protection.outlook.com ~all"
_dmarc.certas.ch. IN TXT "v=DMARC1; p=none;"