Brugg Group

brugg.com

Industry: Machinery & electrical
Headquarters: Brugg, Aargau
Type: private
Employees (approx.): 1,600
Checked on: 19 October 2026

51/100Grade C

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.: 62.2 ▼ 11.2
Canton avg.: 57.3 ▼ 6.3
Overall avg.: 53.5 ▼ 2.5
Rank 79 of 112 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 (10)

One more sending service can break the limit. Flattening or subdomains for third parties create headroom.
!SPF authorises very large IP ranges (197,127)

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.
!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: Microsoft 365
Provider jurisdiction: USA · MX: US
Detection confidence: 100 / 100
Microsoft tenant: Managed · Brugg Group AG
Tenant region: EU

Signals (6)

MX	Microsoft 365	`brugg-com.mail.protection.outlook.com`
SPF	Microsoft 365	`include:spf.protection.outlook.com`
DKIM	Microsoft 365	`selector1 → selector1-brugg-com._domainkey.bruggnet.onmicrosoft.com`
Autodiscover	Microsoft 365	`autodiscover.outlook.com`
Network	Microsoft 365	`AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation`
Entra ID	Microsoft 365	`Entra-ID-Tenant (Managed)`

MX servers

Pref	Host	IP	Network	Country	TLSA
10	`brugg-com.mail.protection.outlook.com`	`52.101.68.27`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US	–
		`52.101.68.15`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US
		`52.101.68.10`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US

SPF

v=spf1 mx a ip4:217.26.49.0/24 ip4:185.49.152.144 ip4:149.72.82.228 include:spf.cloud.ci-solution.com include:aspmx.pardot.com include:spf.protection.outlook.com  include:spf.crsend.com redirect=spf1.brugg.com -all

all: -all
DNS lookups: 10 / 10
Includes: spf.cloud.ci-solution.comaspmx.pardot.comspf.protection.outlook.comspf.crsend.comspf1.brugg.com
Detected sending services: Microsoft 365
IPv4: 197,127 addresses authorised directly

DMARC

v=DMARC1;p=none;sp=none;pct=100;rua=mailto:emailsecurity@brugg.com;ruf=mailto:security@brugg.com;ri=86400;aspf=r;adkim=r;fo=1

Policy: p=none
Subdomains (sp): none
Share (pct): 100 %
Alignment DKIM/SPF: relaxed / relaxed
Aggregate reports (rua): emailsecurity@brugg.com
Forensic reports (ruf): security@brugg.com

DKIM

Selector	Key	delegated to
`mail`	RSA 1024	–
`s1`	RSA 2048	`s1.domainkey.u18858631.wl132.sendgrid.net`
`s2`	RSA 1024	`s2.domainkey.u18858631.wl132.sendgrid.net`
`selector1`	RSA 2048	`selector1-brugg-com._domainkey.bruggnet.onmicrosoft.com`
`selector2`	RSA 2048	`selector2-brugg-com._domainkey.bruggnet.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.

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History

18 October 2026 Score 51 · DMARC none

All changes of this organisation in the change log →

Raw data

brugg.com. IN MX 10 brugg-com.mail.protection.outlook.com.
brugg.com. IN TXT "v=spf1 mx a ip4:217.26.49.0/24 ip4:185.49.152.144 ip4:149.72.82.228 include:spf.cloud.ci-solution.com include:aspmx.pardot.com include:spf.protection.outlook.com  include:spf.crsend.com redirect=spf1.brugg.com -all"
_dmarc.brugg.com. IN TXT "v=DMARC1;p=none;sp=none;pct=100;rua=mailto:emailsecurity@brugg.com;ruf=mailto:security@brugg.com;ri=86400;aspf=r;adkim=r;fo=1"

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