Investis

investis.com

Industry: Construction & real estate
Headquarters: Genève, Geneva
Type: listed
Employees (approx.): 1,200
Checked on: 19 October 2026

55/100Grade C

Protection against forged senders: protected, with a gap: subdomains not protected (sp=none)

Points per criterion

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

Industry avg.: 58.2 ▼ 3.2
Canton avg.: 51.9 ▲ 3.1
Overall avg.: 53.5 ▲ 1.5
Rank 38 of 67 in the industry

Findings

✕SPF exceeds 10 DNS lookups (11)

More than ten lookups (include, a, mx, ptr, exists, redirect) cause a permerror; many receivers then treat SPF as failed.
!Subdomains unprotected (sp=none)

The main domain is protected, but subdomains such as invoice.company.ch can still be forged.
!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: Mimecast
Provider jurisdiction: USA · MX: GB
Detection confidence: 42 / 100
Microsoft tenant: Managed · IDX
Tenant region: EU

Signals (5)

Autodiscover	Microsoft 365	`autodiscover.outlook.com`
Domain verification	Microsoft 365	`MS=ms10667192`
Domain verification	Google Workspace	`google-site-verification=1G3rNF0j-qGeWLj`
Domain verification	Amazon	`amazonses:pzbTDJGBYE2emjast+aw6WBIuXJq0R`
Entra ID	Microsoft 365	`Entra-ID-Tenant (Managed)`

MX servers

Pref	Host	IP	Network	Country	TLSA
10	`eu-smtp-inbound-1.mimecast.com`	`91.220.42.211`	AS42427 MIMECAST-UK - Mimecast Services Limited	GB	–
		`195.130.217.241`	AS42427 MIMECAST-UK - Mimecast Services Limited	GB
		`91.220.42.201`	AS42427 MIMECAST-UK - Mimecast Services Limited	GB
10	`eu-smtp-inbound-2.mimecast.com`	`91.220.42.211`	AS42427 MIMECAST-UK - Mimecast Services Limited	GB	–
		`91.220.42.241`	AS42427 MIMECAST-UK - Mimecast Services Limited	GB
		`91.220.42.201`	AS42427 MIMECAST-UK - Mimecast Services Limited	GB

SPF

v=spf1 include:_netblocks.mimecast.com include:sendgrid.net ip4:52.5.109.25 ip4:52.7.211.205 ip4:10.100.1.60 -all

all: -all
DNS lookups: 11 / 10
Includes: _netblocks.mimecast.comsendgrid.net
Detected sending services: Mimecast, SendGrid
IPv4: 3 addresses authorised directly

DMARC

v=DMARC1; p=reject; sp=none; pct=100; ri=86400; rua=mailto:phoneandpc@investisdigital.com; ruf=mailto:phoneandpc@investisdigital.com; fo=1;

Policy: p=reject
Subdomains (sp): none
Share (pct): 100 %
Alignment DKIM/SPF: relaxed / relaxed
Aggregate reports (rua): phoneandpc@investisdigital.com
Forensic reports (ruf): phoneandpc@investisdigital.com

DKIM

Selector	Key	delegated to
`m1`	RSA 1024	–
`s1`	RSA 2048	`s1.domainkey.u17088.wl089.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 365GoogleAtlassianAdobeAmazon SESGlobalSignMimecast

History

18 October 2026 Score 55 · DMARC reject

All changes of this organisation in the change log →

Raw data

investis.com. IN MX 10 eu-smtp-inbound-1.mimecast.com.
investis.com. IN MX 10 eu-smtp-inbound-2.mimecast.com.
investis.com. IN TXT "v=spf1 include:_netblocks.mimecast.com include:sendgrid.net ip4:52.5.109.25 ip4:52.7.211.205 ip4:10.100.1.60 -all"
_dmarc.investis.com. IN TXT "v=DMARC1; p=reject; sp=none; pct=100; ri=86400; rua=mailto:phoneandpc@investisdigital.com; ruf=mailto:phoneandpc@investisdigital.com; fo=1;"

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