LEMO

lemo.com

Industry: Machinery & electrical
Headquarters: Ecublens, Vaud
Type: private
Employees (approx.): 1,000
Checked on: 19 October 2026

70/100Grade B

Protection against forged senders: protected

Points per criterion

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

Industry avg.: 62.2 ▲ 7.8
Canton avg.: 58.5 ▲ 11.5
Overall avg.: 53.5 ▲ 16.5
Rank 32 of 112 in the industry

Findings

!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 · LEMO SA
Tenant region: EU

Signals (8)

MX	Microsoft 365	`lemo-com.mail.protection.outlook.com`
SPF	Microsoft 365	`include:spf.protection.outlook.com`
DKIM	Microsoft 365	`selector1 → selector1-lemo-com._domainkey.lemo.onmicrosoft.com`
Autodiscover	Microsoft 365	`autodiscover.outlook.com`
Domain verification	Microsoft 365	`MS=ms93714742`
Network	Microsoft 365	`AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation`
Domain verification	Google Workspace	`google-site-verification=xBM13GowufmeiWd`
Entra ID	Microsoft 365	`Entra-ID-Tenant (Managed)`

MX servers

Pref	Host	IP	Network	Country	TLSA
0	`lemo-com.mail.protection.outlook.com`	`52.101.91.153`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US	–
		`52.101.73.155`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US
		`52.101.91.159`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US

SPF

v=spf1 include:spf.protection.outlook.com include:spf-oracle.lemo.com ip4:69.147.214.88/29 ip4:140.72.58.252 ip4:149.72.58.252 ip4:13.171.216.164 ip4:192.29.160.0/19 -all

all: -all
DNS lookups: 5 / 10
Includes: spf.protection.outlook.comspf-oracle.lemo.com
Detected sending services: Microsoft 365, Oracle
IPv4: 8,203 addresses authorised directly

DMARC

v=DMARC1; p=reject; sp=quarantine; rua=mailto:webmaster@lemo.com; ruf=mailto:webmaster@lemo.com; fo=1; ri=3600

Policy: p=reject
Subdomains (sp): quarantine
Share (pct): 100 %
Alignment DKIM/SPF: relaxed / relaxed
Aggregate reports (rua): webmaster@lemo.com
Forensic reports (ruf): webmaster@lemo.com

DKIM

Selector	Key	delegated to
`k1`	RSA 1024	`dkim.mcsv.net`
`k2`	RSA 2048	`dkim2.mcsv.net`
`k3`	RSA 2048	`dkim3.mcsv.net`
`s1`	RSA 2048	`s1.domainkey.u27115793.wl044.sendgrid.net`
`s2`	RSA 2048	`s2.domainkey.u27115793.wl044.sendgrid.net`
`selector1`	RSA 1024	`selector1-lemo-com._domainkey.lemo.onmicrosoft.com`
`selector2`	RSA 2048	`selector2-lemo-com._domainkey.lemo.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.

Microsoft 365GoogleDocuSignGlobalSignHave I Been PwnedTeamViewer

History

19 October 2026 Score 70 · DMARC reject

All changes of this organisation in the change log →

Raw data

lemo.com. IN MX 0 lemo-com.mail.protection.outlook.com.
lemo.com. IN TXT "v=spf1 include:spf.protection.outlook.com include:spf-oracle.lemo.com ip4:69.147.214.88/29 ip4:140.72.58.252 ip4:149.72.58.252 ip4:13.171.216.164 ip4:192.29.160.0/19 -all"
_dmarc.lemo.com. IN TXT "v=DMARC1; p=reject; sp=quarantine; rua=mailto:webmaster@lemo.com; ruf=mailto:webmaster@lemo.com; fo=1; ri=3600"

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