Reichle & De-Massari

rdm.com

Industry: Machinery & electrical
Headquarters: Wetzikon, Zurich
Type: private
Employees (approx.): 500
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.: 53 ▼ 2
Overall avg.: 53.5 ▼ 2.5
Rank 88 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.
!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.

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 · Reichle & De-Massari Holding AG
Tenant region: EU

Signals (6)

MX	Microsoft 365	`rdm-com.mail.protection.outlook.com`
SPF	Microsoft 365	`include:spf.protection.outlook.com`
DKIM	Microsoft 365	`selector2 → selector2-rdm-com._domainkey.reichledemassari.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	`rdm-com.mail.protection.outlook.com`	`52.101.68.15`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US	–
		`52.101.68.8`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US
		`52.101.73.155`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US

SPF

v=spf1 include:spf.protection.outlook.com include:spf-de.emailsignatures365.com -all

all: -all
DNS lookups: 2 / 10
Includes: spf.protection.outlook.comspf-de.emailsignatures365.com
Detected sending services: Microsoft 365

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
`hs1`	RSA 2048	`rdm-com.hs01a.dkim.hubspotemail.net`
`hs2`	RSA 2048	`rdm-com.hs01b.dkim.hubspotemail.net`
`m1`	RSA 1024	`acc527996.domainkey.freshdesk.com`
`s1`	RSA 2048	`s1acc527996.domainkey.freshdesk.com`
`s2`	RSA 2048	`s2acc527996.domainkey.freshdesk.com`
`selector2`	RSA 1024	`selector2-rdm-com._domainkey.reichledemassari.onmicrosoft.com`
`smtpapi`	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

19 October 2026 Score 51 · DMARC none

All changes of this organisation in the change log →

Raw data

rdm.com. IN MX 10 rdm-com.mail.protection.outlook.com.
rdm.com. IN TXT "v=spf1 include:spf.protection.outlook.com include:spf-de.emailsignatures365.com -all"
_dmarc.rdm.com. IN TXT "v=DMARC1; p=none;"

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