Arbonia

arbonia.com

Industry: Machinery & electrical
Headquarters: Arbon, Thurgau
Type: listed
Employees (approx.): 3,200
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.: 41.3 ▲ 9.7
Overall avg.: 53.5 ▼ 2.5
Rank 78 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.
!SPF close to the 10-lookup limit (9)

One more sending service can break the limit. Flattening or subdomains for third parties create headroom.
!External report receiver not authorised

The authorisation record for an external rua domain is missing (RFC 7489 §7.1); many receivers then send no reports.
!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: Self-hosted / other
Provider jurisdiction: Switzerland · MX: CH
Detection confidence: 85 / 100
Microsoft tenant: Managed · Arbonia Group
Tenant region: EU

Signals (5)

SPF	Microsoft 365	`include:spf.protection.outlook.com`
Domain verification	Google Workspace	`google-site-verification=_7iMcx5A8QRiYJS`
SPF	Amazon	`include:amazonses.com`
Network	Swisscom	`AS3303 SWISSCOM - Swisscom (Schweiz) AG`
Entra ID	Microsoft 365	`Entra-ID-Tenant (Managed)`

MX servers

Pref	Host	IP	Network	Country	TLSA
10	`mail.afg.ch`	`194.209.129.36`	AS3303 SWISSCOM - Swisscom (Schweiz) AG	CH	–
20	`smtp.afg.ch`	`194.209.129.44`	AS3303 SWISSCOM - Swisscom (Schweiz) AG	CH	–

SPF

v=spf1 include:spf1.arbonia.com include:spf2.arbonia.com include:mailing.eqs.com include:6107279.spf02.hubspotemail.net include:spf.protection.outlook.com include:_spf.atlassian.net include:_spf.a1a-server.de -all

all: -all
DNS lookups: 9 / 10
Includes: spf1.arbonia.comspf2.arbonia.commailing.eqs.com6107279.spf02.hubspotemail.netspf.protection.outlook.com_spf.atlassian.net_spf.a1a-server.de
Detected sending services: Mailjet, HubSpot, Microsoft 365, Atlassian, Amazon SES

DMARC

v=DMARC1; p=none; rua=mailto:postmaster@afg.ch; ruf=mailto:postmaster@afg.ch; adkim=r; aspf=r; fo=1

Policy: p=none
Subdomains (sp): inherits p=none
Share (pct): 100 %
Alignment DKIM/SPF: relaxed / relaxed
Aggregate reports (rua): postmaster@afg.ch
Forensic reports (ruf): postmaster@afg.ch

DKIM

Selector	Key	delegated to
`mailjet`	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.

GoogleAtlassianDocuSign

History

18 October 2026 Score 51 · DMARC none

All changes of this organisation in the change log →

Raw data

arbonia.com. IN MX 10 mail.afg.ch.
arbonia.com. IN MX 20 smtp.afg.ch.
arbonia.com. IN TXT "v=spf1 include:spf1.arbonia.com include:spf2.arbonia.com include:mailing.eqs.com include:6107279.spf02.hubspotemail.net include:spf.protection.outlook.com include:_spf.atlassian.net include:_spf.a1a-server.de -all"
_dmarc.arbonia.com. IN TXT "v=DMARC1; p=none; rua=mailto:postmaster@afg.ch; ruf=mailto:postmaster@afg.ch; adkim=r; aspf=r; fo=1"

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