Nexthink

nexthink.com

Industry: Telecom, IT & media
Headquarters: Prilly, Vaud
Type: private
Employees (approx.): 1,000
Checked on: 19 October 2026

74/100Grade B

Protection against forged senders: largely protected

Points per criterion

MX 10 / 10
SPF 15 / 15
DKIM 20 / 20
DMARC 19 / 25
DNSSEC 10 / 10
Transport (MTA-STS/DANE) 0 / 15
TLS-RPT 0 / 5

Industry avg.: 63.6 ▲ 10.4
Canton avg.: 58.5 ▲ 15.5
Overall avg.: 53.5 ▲ 20.5
Rank 10 of 50 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.
!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.
iStrict DMARC alignment

adkim=s or aspf=s requires exact domain matches. Secure, but demanding when sending from subdomains.

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 · Nexthink SA
Tenant region: EU

Signals (8)

MX	Microsoft 365	`nexthink-com.mail.protection.outlook.com`
SPF	Microsoft 365	`include:spf.protection.outlook.com`
DKIM	Microsoft 365	`selector1 → selector1-nexthink-com._domainkey.nexthink.onmicrosoft.com`
Autodiscover	Microsoft 365	`autodiscover.outlook.com`
Domain verification	Microsoft 365	`MS=ms46403279`
Network	Microsoft 365	`AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation`
Domain verification	Google Workspace	`google-site-verification=8z844MsgUpoRlJp`
Entra ID	Microsoft 365	`Entra-ID-Tenant (Managed)`

MX servers

Pref	Host	IP	Network	Country	TLSA
0	`nexthink-com.mail.protection.outlook.com`	`52.101.91.21`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US	–
		`52.101.73.145`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US
		`52.101.68.15`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US

SPF

v=spf1 include:_spf.nexthink.com include:_spf.psm.knowbe4.com include:spf.protection.outlook.com include:_spf.salesforce.com include:spf.autopilothq.com include:sendgrid.net include:mail.thoughtindustries.com include:stspg-customer.com -all

all: -all
DNS lookups: 10 / 10
Includes: _spf.nexthink.com_spf.psm.knowbe4.comspf.protection.outlook.com_spf.salesforce.comspf.autopilothq.comsendgrid.netmail.thoughtindustries.comstspg-customer.com
Detected sending services: Microsoft 365, Salesforce, SendGrid

DMARC

v=DMARC1; p=quarantine; rua=mailto:74fb251461fd4338981b39f2ede7be24@dmarc-reports.cloudflare.net,mailto:6wbnsegn@ag.eu.dmarcian.com, mailto:email-security@nexthink.com; ruf=mailto:6wbnsegn@fr.eu.dmarcian.com, mailto:email-security@nexthink.com; fo=1; adkim=s; aspf=s; sp=quarantine

Policy: p=quarantine
Subdomains (sp): quarantine
Share (pct): 100 %
Alignment DKIM/SPF: strict / strict
Aggregate reports (rua): 74fb251461fd4338981b39f2ede7be24@dmarc-reports.cloudflare.net6wbnsegn@ag.eu.dmarcian.comemail-security@nexthink.com
Forensic reports (ruf): 6wbnsegn@fr.eu.dmarcian.comemail-security@nexthink.com
Report services: Cloudflare, dmarcian

DKIM

Selector	Key	delegated to
`default`	RSA 1024	–
`mailo`	RSA 1024	–
`selector1`	RSA 2048	`selector1-nexthink-com._domainkey.nexthink.onmicrosoft.com`
`selector2`	RSA 1024	`selector2-nexthink-com._domainkey.nexthink.onmicrosoft.com`
`smtpapi`	RSA 1024	–

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 365GoogleAppleMeta/FacebookAtlassianDocuSignAdobeZoomHave I Been PwnedMiroCitrix

History

18 October 2026 Score 74 · DMARC quarantine

All changes of this organisation in the change log →

Raw data

nexthink.com. IN MX 0 nexthink-com.mail.protection.outlook.com.
nexthink.com. IN TXT "v=spf1 include:_spf.nexthink.com include:_spf.psm.knowbe4.com include:spf.protection.outlook.com include:_spf.salesforce.com include:spf.autopilothq.com include:sendgrid.net include:mail.thoughtindustries.com include:stspg-customer.com -all"
_dmarc.nexthink.com. IN TXT "v=DMARC1; p=quarantine; rua=mailto:74fb251461fd4338981b39f2ede7be24@dmarc-reports.cloudflare.net,mailto:6wbnsegn@ag.eu.dmarcian.com, mailto:email-security@nexthink.com; ruf=mailto:6wbnsegn@fr.eu.dmarcian.com, mailto:email-security@nexthink.com; fo=1; adkim=s; aspf=s; sp=quarantine"

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