SPG

spg.ch

Industry: Construction & real estate
Headquarters: Genève, Geneva
Type: private
Employees (approx.): 300
Checked on: 19 October 2026

61/100Grade 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 10 / 10
Transport (MTA-STS/DANE) 0 / 15
TLS-RPT 0 / 5

Industry avg.: 58.2 ▲ 2.8
Canton avg.: 51.9 ▲ 9.1
Overall avg.: 53.5 ▲ 7.5
Rank 34 of 67 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.
!DKIM key below 2048 bits

RSA-1024 is considered too weak (RFC 8301, M3AAWG). Rotate to 2048-bit keys.
!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 · Société Privée de Gérance SA
Tenant region: EU

Signals (8)

MX	Microsoft 365	`spg-ch.mail.protection.outlook.com`
SPF	Microsoft 365	`include:spf.protection.outlook.com`
DKIM	Microsoft 365	`selector1 → selector1-spg-ch._domainkey.spgimmo.a-v1.dkim.mail.microsoft`
Autodiscover	Microsoft 365	`autodiscover.outlook.com`
Domain verification	Microsoft 365	`MS=ms38077418`
Network	Microsoft 365	`AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation`
Domain verification	Google Workspace	`google-site-verification=xFAnijC_qEDs6tM`
Entra ID	Microsoft 365	`Entra-ID-Tenant (Managed)`

MX servers

Pref	Host	IP	Network	Country	TLSA
10	`spg-ch.mail.protection.outlook.com`	`52.101.185.12`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US	–
		`52.101.187.1`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US
		`52.101.185.13`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US

SPF

v=spf1 mx:mailsec01.groupespg.ch mx:mailsec02.groupespg.ch +ip4:213.139.244.42 +ip4:213.139.244.43 include:servers.mcsv.net include:spf.protection.outlook.com include:spf.immomigsa.ch include:u5743641.wl142.sendgrid.net ip4:46.231.206.119 ip4:46.231.206.127 include:spf-de.emailsignatures365.com -all

all: -all
DNS lookups: 9 / 10
Includes: servers.mcsv.netspf.protection.outlook.comspf.immomigsa.chu5743641.wl142.sendgrid.netspf-de.emailsignatures365.com
Detected sending services: Mailchimp/Mandrill, Microsoft 365, SendGrid
IPv4: 4 addresses authorised directly

DMARC

v=DMARC1; p=none; rua=mailto:rua@dmarc.brevo.com

Policy: p=none
Subdomains (sp): inherits p=none
Share (pct): 100 %
Alignment DKIM/SPF: relaxed / relaxed
Aggregate reports (rua): rua@dmarc.brevo.com
Report services: Brevo

DKIM

Selector	Key	delegated to
`k2`	RSA 2048	`dkim2.mcsv.net`
`k3`	RSA 2048	`dkim3.mcsv.net`
`mail`	RSA 2048	–
`s1`	RSA 2048	`s1.domainkey.u5743641.wl142.sendgrid.net`
`s2`	RSA 1024	`s2.domainkey.u5743641.wl142.sendgrid.net`
`selector1`	RSA 2048	`selector1-spg-ch._domainkey.spgimmo.a-v1.dkim.mail.microsoft`

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.

Microsoft 365GoogleAppleAtlassianCisco WebexBrevoCanva

History

19 October 2026 Score 61 · DMARC none

All changes of this organisation in the change log →

Raw data

spg.ch. IN MX 10 spg-ch.mail.protection.outlook.com.
spg.ch. IN TXT "v=spf1 mx:mailsec01.groupespg.ch mx:mailsec02.groupespg.ch +ip4:213.139.244.42 +ip4:213.139.244.43 include:servers.mcsv.net include:spf.protection.outlook.com include:spf.immomigsa.ch include:u5743641.wl142.sendgrid.net ip4:46.231.206.119 ip4:46.231.206.127 include:spf-de.emailsignatures365.com -all"
_dmarc.spg.ch. IN TXT "v=DMARC1; p=none; rua=mailto:rua@dmarc.brevo.com"

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