Insel Gruppe
insel.ch
- Industry
- Healthcare
- Headquarters
- Bern, Bern
- Type
- public
- Employees (approx.)
- 11,000
- Checked on
- 19 October 2026
Protection against forged senders: not protected (monitoring only)
Points per criterion
- MX 10 / 10
- SPF 15 / 15
- DKIM 20 / 20
- DMARC 6 / 25
- DNSSEC 0 / 10
- Transport (MTA-STS/DANE) 0 / 15
- TLS-RPT 0 / 5
- Industry avg.: 54.8 ▼ 3.8
- Canton avg.: 53.1 ▼ 2.1
- Overall avg.: 53.5 ▼ 2.5
- Rank 60 of 113 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 authorises very large IP ranges (65,797)
The SPF record itself lists IPv4 ranges with more than 65,000 addresses. The wider the range, the easier it is for third parties to send from an authorised network.
-
!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.
-
!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
- Self-hosted / other
- Provider jurisdiction
- Switzerland · MX: CH
- Detection confidence
- 85 / 100
- Microsoft tenant
- Managed · Insel Gruppe AG
- Tenant region
- EU
Signals (3)
| SPF | Microsoft 365 | include:spf.protection.outlook.com |
|---|---|---|
| Network | Swiss hoster | AS6730 SUNRISE - Sunrise GmbH |
| Entra ID | Microsoft 365 | Entra-ID-Tenant (Managed) |
MX servers
| Pref | Host | IP | Network | Country | TLSA |
|---|---|---|---|---|---|
| 10 | mx2.t-systems.ch | 193.192.231.129 | AS6730 SUNRISE - Sunrise GmbH | CH | – |
| 10 | mx1.t-systems.ch | 193.192.231.130 | AS6730 SUNRISE - Sunrise GmbH | CH | – |
SPF
v=spf1 mx ip4:193.247.208.0/24 ip4:161.62.0.0/16 ip4:31.11.29.203 ip4:31.11.29.204 ip4:195.48.54.53 ip4:80.74.152.50 ip4:91.199.98.57 include:_spf.retarus.com include:spf.umantis.com include:_spf.unibe.ch include:_spf.zimpel.de include:_spf.prospective.ch -all- all
-all- DNS lookups
- 7 / 10
- Includes
_spf.retarus.comspf.umantis.com_spf.unibe.ch_spf.zimpel.de_spf.prospective.ch- Detected sending services
- Retarus, Microsoft 365
- IPv4
- 65,797 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 |
|---|---|---|
mail | RSA 1024 | – |
s1 | RSA 2048 | s1.domainkey.u2081681.wl182.sendgrid.net |
s2 | RSA 1024 | s2.domainkey.u2081681.wl182.sendgrid.net |
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.
AppleAdobeCisco WebexMiroBrevo
History
- Score 51 · DMARC none
Raw data
insel.ch. IN MX 10 mx2.t-systems.ch.
insel.ch. IN MX 10 mx1.t-systems.ch.
insel.ch. IN TXT "v=spf1 mx ip4:193.247.208.0/24 ip4:161.62.0.0/16 ip4:31.11.29.203 ip4:31.11.29.204 ip4:195.48.54.53 ip4:80.74.152.50 ip4:91.199.98.57 include:_spf.retarus.com include:spf.umantis.com include:_spf.unibe.ch include:_spf.zimpel.de include:_spf.prospective.ch -all"
_dmarc.insel.ch. IN TXT "v=DMARC1; p=none;"