GDELS-Mowag

gdels.com

Industry: Machinery & electrical
Headquarters: Kreuzlingen, Thurgau
Type: private
Employees (approx.): 800
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.: 41.3 ▲ 28.7
Overall avg.: 53.5 ▲ 16.5
Rank 26 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
Upstream gateway: Proofpoint
Provider jurisdiction: USA · MX: US
Detection confidence: 97 / 100
Microsoft tenant: Federated · General Dynamics European Land Systems
Tenant region: EU
Federated via: fs.gdels.com

Signals (4)

SPF	Microsoft 365	`include:spf.protection.outlook.com`
DKIM	Microsoft 365	`selector1 → selector1-gdels-com._domainkey.gdels.onmicrosoft.com`
Domain verification	Google Workspace	`google-site-verification=gCaDlhFIGDTqoPA`
Entra ID	Microsoft 365	`Entra-ID-Tenant (Federated)`

MX servers

Pref	Host	IP	Network	Country	TLSA
5	`mxb-00616c01.gslb.pphosted.com`	`205.220.184.239`	AS52129 PROOFPOINT-ASN-EU - Proofpoint, Inc.	US	–
5	`mxa-00616c01.gslb.pphosted.com`	`205.220.184.239`	AS52129 PROOFPOINT-ASN-EU - Proofpoint, Inc.	US	–

SPF

v=spf1 ip4:194.230.90.115 ip4:85.62.168.10 include:spf.protection.outlook.com include:spf-00616c01.pphosted.com -all

all: -all
DNS lookups: 2 / 10
Includes: spf.protection.outlook.comspf-00616c01.pphosted.com
Detected sending services: Microsoft 365, Proofpoint
IPv4: 2 addresses authorised directly

DMARC

v=DMARC1; p=reject; rua=mailto:xz2pc9hx@ag.dmarcian-eu.com; ruf=mailto:xz2pc9hx@fr.dmarcian-eu.com,mailto:dmarc@gdels.com

Policy: p=reject
Subdomains (sp): inherits p=reject
Share (pct): 100 %
Alignment DKIM/SPF: relaxed / relaxed
Aggregate reports (rua): xz2pc9hx@ag.dmarcian-eu.com
Forensic reports (ruf): xz2pc9hx@fr.dmarcian-eu.comdmarc@gdels.com

DKIM

Selector	Key	delegated to
`selector1`	RSA 1024	`selector1-gdels-com._domainkey.gdels.onmicrosoft.com`
`selector2`	RSA 2048	`selector2-gdels-com._domainkey.gdels.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.

GoogleAdobeDropbox

History

19 October 2026 Score 70 · DMARC reject

All changes of this organisation in the change log →

Raw data

gdels.com. IN MX 5 mxb-00616c01.gslb.pphosted.com.
gdels.com. IN MX 5 mxa-00616c01.gslb.pphosted.com.
gdels.com. IN TXT "v=spf1 ip4:194.230.90.115 ip4:85.62.168.10 include:spf.protection.outlook.com include:spf-00616c01.pphosted.com -all"
_dmarc.gdels.com. IN TXT "v=DMARC1; p=reject; rua=mailto:xz2pc9hx@ag.dmarcian-eu.com; ruf=mailto:xz2pc9hx@fr.dmarcian-eu.com,mailto:dmarc@gdels.com"

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