Amrize

amrize.com

Industry: Building materials
Headquarters: Zug, Zug
Type: listed
Employees (approx.): 19,000
Checked on: 19 October 2026

78/100Grade B

Protection against forged senders: protected, with a gap: pct=10

Points per criterion

MX 10 / 10
SPF 13 / 15
DKIM 20 / 20
DMARC 25 / 25
DNSSEC 10 / 10
Transport (MTA-STS/DANE) 0 / 15
TLS-RPT 0 / 5

Industry avg.: 60.3 ▲ 17.7
Canton avg.: 63.2 ▲ 14.8
Overall avg.: 53.5 ▲ 24.5
Rank 3 of 20 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.
!DMARC applies to part of the mail only (pct<100) (10)

With pct below 100 the policy is applied to only part of the failing mail.
!DKIM key below 2048 bits

RSA-1024 is considered too weak (RFC 8301, M3AAWG). Rotate to 2048-bit keys.
!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: Google Workspace
Provider jurisdiction: USA · MX: US
Detection confidence: 96 / 100
Microsoft tenant: Federated · Amrize
Tenant region: EU
Federated via: accounts.google.com

Signals (7)

Domain verification	Microsoft 365	`MS=ms10846792`
MX	Google Workspace	`smtp.google.com`
SPF	Google Workspace	`include:_spf.google.com`
DKIM	Google Workspace	`google`
Domain verification	Google Workspace	`google-site-verification=OLyNVRJZD10h3kV`
Network	Google Workspace	`AS15169 GOOGLE - Google LLC`
Entra ID	Microsoft 365	`Entra-ID-Tenant (Federated)`

MX servers

Pref	Host	IP	Network	Country	TLSA
1	`smtp.google.com`	`142.251.127.27`	AS15169 GOOGLE - Google LLC	US	–
1	`smtp.google.com`	`142.251.127.26`	AS15169 GOOGLE - Google LLC	US	–

SPF

v=spf1 include:_spf.google.com include:mail.zendesk.com include:spf1.amrize.com ~all

all: ~all
DNS lookups: 10 / 10
Includes: _spf.google.commail.zendesk.comspf1.amrize.com
Detected sending services: Google, Zendesk, Mailgun

DMARC

v=DMARC1; p=reject; pct=10; rua=mailto:tqdmxooi@ag.us.dmarcian.com;

Policy: p=reject
Subdomains (sp): inherits p=reject
Share (pct): 10 %
Alignment DKIM/SPF: relaxed / relaxed
Aggregate reports (rua): tqdmxooi@ag.us.dmarcian.com
Report services: dmarcian

DKIM

Selector	Key	delegated to
`cm`	RSA 1024	–
`google`	RSA 2048	–
`k1`	RSA 1024	–
`k2`	RSA 1024	–
`s1`	RSA 1024	`s1.domainkey.u11549234.wl235.sendgrid.net`
`s2`	RSA 1024	`s2.domainkey.u11549234.wl235.sendgrid.net`

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

Transport encryption

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

Verified services

From verification records in the domain TXT: services where the domain is verified.

Microsoft 365GoogleAppleDocuSignCisco WebexKnowBe4LinkedInSmartsheet

History

18 October 2026 Score 78 · DMARC reject

All changes of this organisation in the change log →

Raw data

amrize.com. IN MX 1 smtp.google.com.
amrize.com. IN TXT "v=spf1 include:_spf.google.com include:mail.zendesk.com include:spf1.amrize.com ~all"
_dmarc.amrize.com. IN TXT "v=DMARC1; p=reject; pct=10; rua=mailto:tqdmxooi@ag.us.dmarcian.com;"

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