Implenia

implenia.com

Industry: Construction & real estate
Headquarters: Opfikon, Zurich
Type: listed
Employees (approx.): 9,000
Checked on: 19 October 2026

45/100Grade C

Protection against forged senders: not protected

Points per criterion

MX 10 / 10
SPF 15 / 15
DKIM 20 / 20
DMARC 0 / 25
DNSSEC 0 / 10
Transport (MTA-STS/DANE) 0 / 15
TLS-RPT 0 / 5

Industry avg.: 58.2 ▼ 13.2
Canton avg.: 53 ▼ 8
Overall avg.: 53.5 ▼ 8.5
Rank 55 of 67 in the industry

Findings

✕No DMARC record

Without DMARC no receiver reliably rejects forged mail in the domain's name, and the organisation receives no abuse reports.
!SPF close to the 10-lookup limit (8)

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.
!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
Provider jurisdiction: USA · MX: US
Detection confidence: 100 / 100
Microsoft tenant: Managed · Implenia AG
Tenant region: EU

Signals (8)

MX	Microsoft 365	`implenia-com.mail.protection.outlook.com`
SPF	Microsoft 365	`include:spf.protection.outlook.com`
Autodiscover	Microsoft 365	`autodiscover.outlook.com`
Domain verification	Microsoft 365	`MS=ms96938033`
Network	Microsoft 365	`AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation`
Domain verification	Google Workspace	`google-site-verification=umi3LljAYVMLK8S`
SPF	Amazon	`include:amazonses.com`
Entra ID	Microsoft 365	`Entra-ID-Tenant (Managed)`

MX servers

Pref	Host	IP	Network	Country	TLSA
0	`implenia-com.mail.protection.outlook.com`	`52.101.68.29`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US	–
		`52.101.91.21`	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 a:domino.implenia.com ip4:149.72.139.229 ip4:159.183.184.211 ip4:217.22.192.53 include:spf.protection.outlook.com include:_spf.salesforce.com include:spf.mailjet.com include:amazonses.com include:_spf-dc2.successfactors.com -all

all: -all
DNS lookups: 8 / 10
Includes: spf.protection.outlook.com_spf.salesforce.comspf.mailjet.comamazonses.com_spf-dc2.successfactors.com
Detected sending services: Microsoft 365, Salesforce, Mailjet, Amazon SES, SAP
IPv4: 3 addresses authorised directly

DMARC

Without DMARC no receiver reliably rejects forged mail in the domain's name, and the organisation receives no abuse reports.

DKIM

Selector	Key	delegated to
`k1`	RSA 1024	`dkim.mcsv.net`
`mailjet`	RSA 1024	–
`s1`	RSA 2048	`s1.domainkey.u12627725.wl226.sendgrid.net`
`s2`	RSA 1024	`s2.domainkey.u12627725.wl226.sendgrid.net`

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 365GoogleAtlassianDocuSignMiroTeamViewer

History

18 October 2026 Score 45 · DMARC -

All changes of this organisation in the change log →

Raw data

implenia.com. IN MX 0 implenia-com.mail.protection.outlook.com.
implenia.com. IN TXT "v=spf1 mx a:domino.implenia.com ip4:149.72.139.229 ip4:159.183.184.211 ip4:217.22.192.53 include:spf.protection.outlook.com include:_spf.salesforce.com include:spf.mailjet.com include:amazonses.com include:_spf-dc2.successfactors.com -all"

More from this industry

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