Rotho Kunststoff

rotho.com

Industry: Chemicals & materials
Headquarters: Würenlingen, Aargau
Type: private
Employees (approx.): 400
Checked on: 19 October 2026

70/100Grade B

Protection against forged senders: protected, with a gap: subdomains not protected (sp=none)

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.: 56.8 ▲ 13.2
Canton avg.: 57.3 ▲ 12.7
Overall avg.: 53.5 ▲ 16.5
Rank 8 of 32 in the industry

Findings

!SPF close to the 10-lookup limit (8)

One more sending service can break the limit. Flattening or subdomains for third parties create headroom.
!Subdomains unprotected (sp=none)

The main domain is protected, but subdomains such as invoice.company.ch can still be forged.
!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
Upstream gateway: Cisco Secure Email
Provider jurisdiction: USA · MX: US
Detection confidence: 92 / 100
Microsoft tenant: Managed · Rotho Kunststoff AG
Tenant region: EU

Signals (6)

SPF	Microsoft 365	`include:spf.protection.outlook.com`
Autodiscover	Microsoft 365	`autodiscover.outlook.com`
Domain verification	Microsoft 365	`MS=ms19930994`
Domain verification	Google Workspace	`google-site-verification=4LCS6hCKQaNTQLI`
Network	Google Workspace	`AS396982 GOOGLE-CLOUD-PLATFORM - Google LLC`
Entra ID	Microsoft 365	`Entra-ID-Tenant (Managed)`

MX servers

Pref	Host	IP	Network	Country	TLSA
10	`mx1.hc993-99.eu.iphmx.com`	`23.90.117.136`	AS30238 AS-IRONP-VEGA - Cisco Systems Ironport Division	US	–
10	`mx1.hc993-99.eu.iphmx.com`	`23.90.118.214`	AS30238 AS-IRONP-VEGA - Cisco Systems Ironport Division	US	–
20	`mxb.eu.mailgun.org`	`34.111.130.244`	AS396982 GOOGLE-CLOUD-PLATFORM - Google LLC	US	–

SPF

v=spf1 +mx include:spf.rotho.com include:spf.protection.outlook.com a:dedi4255.your-server.de include:emsd1.com include:spf.emailsignatures365.com include:spf.mandrillapp.com include:mail.zendesk.com -all

all: -all
DNS lookups: 8 / 10
Includes: spf.rotho.comspf.protection.outlook.comemsd1.comspf.emailsignatures365.comspf.mandrillapp.commail.zendesk.com
Detected sending services: Microsoft 365, Mailchimp/Mandrill, Mailchimp Transactional, Zendesk

DMARC

v=DMARC1; p=reject; rua=mailto:aggregate@rotho.com; ruf=mailto:forensic@rotho.com; rf=afrf; sp=none; fo=0:1:d:s; pct=100; ri=86400;

Policy: p=reject
Subdomains (sp): none
Share (pct): 100 %
Alignment DKIM/SPF: relaxed / relaxed
Aggregate reports (rua): aggregate@rotho.com
Forensic reports (ruf): forensic@rotho.com

DKIM

Selector	Key	delegated to
`k2`	RSA 2048	`dkim2.mcsv.net`
`k3`	RSA 2048	`dkim3.mcsv.net`
`s1`	RSA 2048	–

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 365GoogleAppleMeta/Facebook

History

19 October 2026 Score 70 · DMARC reject

All changes of this organisation in the change log →

Raw data

rotho.com. IN MX 10 mx1.hc993-99.eu.iphmx.com.
rotho.com. IN MX 20 mxb.eu.mailgun.org.
rotho.com. IN TXT "v=spf1 +mx include:spf.rotho.com include:spf.protection.outlook.com a:dedi4255.your-server.de include:emsd1.com include:spf.emailsignatures365.com include:spf.mandrillapp.com include:mail.zendesk.com -all"
_dmarc.rotho.com. IN TXT "v=DMARC1; p=reject; rua=mailto:aggregate@rotho.com; ruf=mailto:forensic@rotho.com; rf=afrf; sp=none; fo=0:1:d:s; pct=100; ri=86400;"

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