Kraftwerke Oberhasli (KWO)

grimselstrom.ch

Industry: Energy
Headquarters: Innertkirchen, Bern
Type: private
Employees (approx.): 400
Checked on: 19 October 2026

36/100Grade D

Protection against forged senders: not protected (monitoring only)

Points per criterion

MX 10 / 10
SPF 0 / 15
DKIM 20 / 20
DMARC 6 / 25
DNSSEC 0 / 10
Transport (MTA-STS/DANE) 0 / 15
TLS-RPT 0 / 5

Industry avg.: 60.5 ▼ 24.5
Canton avg.: 53.1 ▼ 17.1
Overall avg.: 53.5 ▼ 17.5
Rank 43 of 43 in the industry

Findings

✕Multiple SPF records (permerror)

RFC 7208 allows exactly one SPF record. Several records cause a permanent error and SPF stops working.
✕DMARC in monitoring mode only (p=none)

p=none provides reports but does not reject a single forgery. The goal is p=reject.
!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.

Check live in the Mail DNS Check →

Who runs the mail?

Mailbox provider: Self-hosted / other
Provider jurisdiction: unclear
Detection confidence: 85 / 100

Signals (1)

SPF	Microsoft 365	`include:spf.protection.outlook.com`

MX servers

Pref	Host	IP	Network	Country	TLSA
10	`mx.kwo.ch`	–

SPF

v=spf1 mx a:website.grimselstrom.ch ip4:80.74.145.173 include:spf.protection.outlook.com -all

all: -all
DNS lookups: 3 / 10
Includes: spf.protection.outlook.com
Detected sending services: Microsoft 365
IPv4: 1 addresses authorised directly

DMARC

v=DMARC1; p=none; rua=mailto:dmarc_agg@vali.email

Policy: p=none
Subdomains (sp): inherits p=none
Share (pct): 100 %
Alignment DKIM/SPF: relaxed / relaxed
Aggregate reports (rua): dmarc_agg@vali.email

DKIM

Selector	Key	delegated to
`default`	RSA 2048	–
`key1`	RSA 1024	–

Checked: 100 common selectors. Keys under custom selectors remain invisible.

Transport encryption

MTA-STS: missing
DANE: missing
DNSSEC: missing
TLS-RPT: missing
BIMI: missing

History

18 October 2026 Score 36 · DMARC none

All changes of this organisation in the change log →

Raw data

grimselstrom.ch. IN MX 10 mx.kwo.ch.
grimselstrom.ch. IN TXT "v=spf1 mx a:website.grimselstrom.ch ip4:80.74.145.173 include:spf.protection.outlook.com -all"
_dmarc.grimselstrom.ch. IN TXT "v=DMARC1; p=none; rua=mailto:dmarc_agg@vali.email"

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