Rafael Pfister
+41 58 510 22 08 Consulting

Interroll

interroll.com

Industry
Machinery & electrical
Headquarters
Sant'Antonino, Ticino
Type
listed
Employees (approx.)
2,300
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

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.

  • !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 · Interroll Management SA
Tenant region
EU
Signals (7)
MXMicrosoft 365interroll-com.mail.protection.outlook.com
SPFMicrosoft 365include:spf.protection.outlook.com
DKIMMicrosoft 365selector1 → selector1-interroll-com._domainkey.interroll1.onmicrosoft.com
AutodiscoverMicrosoft 365autodiscover.outlook.com
NetworkMicrosoft 365AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation
Domain verificationGoogle Workspacegoogle-site-verification=_prk8kzET3vYi2a
Entra IDMicrosoft 365Entra-ID-Tenant (Managed)

MX servers

PrefHostIPNetworkCountryTLSA
10 interroll-com.mail.protection.outlook.com 52.101.68.39 AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation US –
52.101.73.153 AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation US
52.101.91.156 AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation US

SPF

v=spf1 include:spf.protection.outlook.com include:spf-cit.interroll.com include:487329.spf02.hubspotemail.net include:mailing.eqs.com ip4:168.138.226.49 ip4:168.119.205.149 -all
all
-all
DNS lookups
10 / 10
Includes
spf.protection.outlook.comspf-cit.interroll.com487329.spf02.hubspotemail.netmailing.eqs.com
Detected sending services
Microsoft 365, Zendesk, HubSpot, Mailjet
IPv4
2 addresses authorised directly

DMARC

v=DMARC1; p=reject; rua=mailto:ae8ky7wa@ag.eu.dmarcadvisor.com; ruf=mailto:ae8ky7wa@fr.eu.dmarcadvisor.com;
Policy
p=reject
Subdomains (sp)
inherits p=reject
Share (pct)
100 %
Alignment DKIM/SPF
relaxed / relaxed
Aggregate reports (rua)
ae8ky7wa@ag.eu.dmarcadvisor.com
Forensic reports (ruf)
ae8ky7wa@fr.eu.dmarcadvisor.com
Report services
DMARC Advisor

DKIM

SelectorKeydelegated to
hs1 RSA 2048 interroll-com.hs01a.dkim.hubspotemail.net
hs2 RSA 2048 interroll-com.hs01b.dkim.hubspotemail.net
mailjet RSA 1024 –
selector1 RSA 2048 selector1-interroll-com._domainkey.interroll1.onmicrosoft.com
selector2 RSA 2048 selector2-interroll-com._domainkey.interroll1.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

Verified services

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

GoogleAppleAtlassianDocuSignAutodeskTeamViewer

History

  • Score 70 · DMARC reject

All changes of this organisation in the change log →

Raw data 
interroll.com. IN MX 10 interroll-com.mail.protection.outlook.com.
interroll.com. IN TXT "v=spf1 include:spf.protection.outlook.com include:spf-cit.interroll.com include:487329.spf02.hubspotemail.net include:mailing.eqs.com ip4:168.138.226.49 ip4:168.119.205.149 -all"
_dmarc.interroll.com. IN TXT "v=DMARC1; p=reject; rua=mailto:ae8ky7wa@ag.eu.dmarcadvisor.com; ruf=mailto:ae8ky7wa@fr.eu.dmarcadvisor.com;"

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