UMB

umb.ch

Industry: Telecom, IT & media
Headquarters: Cham, Zug
Type: private
Employees (approx.): 400
Checked on: 19 October 2026

80/100Grade 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 10 / 10
Transport (MTA-STS/DANE) 0 / 15
TLS-RPT 0 / 5

Industry avg.: 63.6 ▲ 16.4
Canton avg.: 63.2 ▲ 16.8
Overall avg.: 53.5 ▲ 26.5
Rank 8 of 50 in the industry

Findings

!SPF close to the 10-lookup limit (9)

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.
!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 · UMB AG
Tenant region: EU

Signals (7)

MX	Microsoft 365	`umb-ch.mail.protection.outlook.com`
SPF	Microsoft 365	`include:spf.protection.outlook.com`
DKIM	Microsoft 365	`selector1 → selector1-umb-ch._domainkey.umbcloud.onmicrosoft.com`
Autodiscover	Microsoft 365	`autodiscover.outlook.com`
Network	Microsoft 365	`AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation`
Domain verification	Google Workspace	`google-site-verification=TOjV4F_MKzARLVa`
Entra ID	Microsoft 365	`Entra-ID-Tenant (Managed)`

MX servers

Pref	Host	IP	Network	Country	TLSA
0	`umb-ch.mail.protection.outlook.com`	`52.101.181.153`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US	–
		`52.101.68.8`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US
		`52.101.209.31`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US

SPF

v=spf1 mx include:_spf-it.umb.ch include:_spf-dc.umb.ch include:_spf-ext.umb.ch include:spf.protection.outlook.com -all

all: -all
DNS lookups: 9 / 10
Includes: _spf-it.umb.ch_spf-dc.umb.ch_spf-ext.umb.chspf.protection.outlook.com
Detected sending services: Mailjet, Microsoft 365

DMARC

v=DMARC1; p=reject; rua=mailto:i9t7ndy28j@rua.powerdmarc.com; ruf=mailto:i9t7ndy28j@ruf.powerdmarc.com; sp=none; fo=1; pct=100

Policy: p=reject
Subdomains (sp): none
Share (pct): 100 %
Alignment DKIM/SPF: relaxed / relaxed
Aggregate reports (rua): i9t7ndy28j@rua.powerdmarc.com
Forensic reports (ruf): i9t7ndy28j@ruf.powerdmarc.com
Report services: PowerDMARC

DKIM

Selector	Key	delegated to
`hs1`	RSA 2048	`umb-ch.hs01a.dkim.hubspotemail.net`
`hs2`	RSA 2048	`umb-ch.hs01b.dkim.hubspotemail.net`
`s1`	RSA 2048	`s1.domainkey.u27601681.wl182.sendgrid.net`
`s2`	RSA 2048	`s2.domainkey.u27601681.wl182.sendgrid.net`
`selector1`	RSA 2048	`selector1-umb-ch._domainkey.umbcloud.onmicrosoft.com`
`selector2`	RSA 2048	`selector2-umb-ch._domainkey.umbcloud.onmicrosoft.com`

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.

GoogleAppleAtlassianMiro

History

18 October 2026 Score 80 · DMARC reject

All changes of this organisation in the change log →

Raw data

umb.ch. IN MX 0 umb-ch.mail.protection.outlook.com.
umb.ch. IN TXT "v=spf1 mx include:_spf-it.umb.ch include:_spf-dc.umb.ch include:_spf-ext.umb.ch include:spf.protection.outlook.com -all"
_dmarc.umb.ch. IN TXT "v=DMARC1; p=reject; rua=mailto:i9t7ndy28j@rua.powerdmarc.com; ruf=mailto:i9t7ndy28j@ruf.powerdmarc.com; sp=none; fo=1; pct=100"

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