AC Immune

acimmune.com

Industry: Pharma & biotech
Headquarters: Lausanne, Vaud
Type: listed
Employees (approx.): 150
Checked on: 19 October 2026

51/100Grade 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 0 / 10
Transport (MTA-STS/DANE) 0 / 15
TLS-RPT 0 / 5

Industry avg.: 65.5 ▼ 14.5
Canton avg.: 58.5 ▼ 7.5
Overall avg.: 53.5 ▼ 2.5
Rank 18 of 24 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.
!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 · AC Immune SA
Tenant region: EU

Signals (7)

MX	Microsoft 365	`acimmune-com.mail.protection.outlook.com`
SPF	Microsoft 365	`include:spf.protection.outlook.com`
DKIM	Microsoft 365	`selector1 → selector1-acimmune-com._domainkey.acimmunesa.onmicrosoft.com`
Autodiscover	Microsoft 365	`autodiscover.outlook.com`
Domain verification	Microsoft 365	`MS=ms72686667`
Network	Microsoft 365	`AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation`
Entra ID	Microsoft 365	`Entra-ID-Tenant (Managed)`

MX servers

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

SPF

v=spf1  include:spf.emailsignatures365.com include:mail.zendesk.com include:successfactors.eu include:spf.protection.outlook.com include:_spf.fortimailcloud.com -all

all: -all
DNS lookups: 6 / 10
Includes: spf.emailsignatures365.commail.zendesk.comsuccessfactors.euspf.protection.outlook.com_spf.fortimailcloud.com
Detected sending services: Zendesk, SAP, Microsoft 365

DMARC

v=DMARC1; p=none; rua=mailto:postmaster@acimmune.com; ruf=mailto:postmaster@acimmune.com; fo=1

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

DKIM

Selector	Key	delegated to
`k2`	RSA 2048	`dkim2.mcsv.net`
`k3`	RSA 2048	`dkim3.mcsv.net`
`selector1`	RSA 1024	`selector1-acimmune-com._domainkey.acimmunesa.onmicrosoft.com`
`selector2`	RSA 2048	`selector2-acimmune-com._domainkey.acimmunesa.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.

Microsoft 365AppleDocuSign

History

19 October 2026 Score 51 · DMARC none

All changes of this organisation in the change log →

Raw data

acimmune.com. IN MX 10 acimmune-com.mail.protection.outlook.com.
acimmune.com. IN TXT "v=spf1  include:spf.emailsignatures365.com include:mail.zendesk.com include:successfactors.eu include:spf.protection.outlook.com include:_spf.fortimailcloud.com -all"
_dmarc.acimmune.com. IN TXT "v=DMARC1; p=none; rua=mailto:postmaster@acimmune.com; ruf=mailto:postmaster@acimmune.com; fo=1"

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