CSL Behring Schweiz

cslbehring.com

Industry: Pharma & biotech
Headquarters: Bern, Bern
Type: private
Employees (approx.): 1,900
Checked on: 19 October 2026

49/100Grade C

Protection against forged senders: not protected (monitoring only)

Points per criterion

MX 10 / 10
SPF 13 / 15
DKIM 20 / 20
DMARC 6 / 25
DNSSEC 0 / 10
Transport (MTA-STS/DANE) 0 / 15
TLS-RPT 0 / 5

Industry avg.: 65.5 ▼ 16.5
Canton avg.: 53.1 ▼ 4.1
Overall avg.: 53.5 ▼ 4.5
Rank 24 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: Self-hosted / other
Upstream gateway: Proofpoint
Provider jurisdiction: unclear · MX: US
Detection confidence: 85 / 100
Microsoft tenant: Managed · CSL Behring
Tenant region: NA

Signals (2)

Domain verification	Microsoft 365	`MS=ms55990640`
Entra ID	Microsoft 365	`Entra-ID-Tenant (Managed)`

MX servers

Pref	Host	IP	Network	Country	TLSA
10	`mxb-001a7801.gslb.pphosted.com`	`67.231.156.218`	AS22843 PROOFPOINT-ASN-US-EAST - Proofpoint, Inc.	US	–
10	`mxa-001a7801.gslb.pphosted.com`	`67.231.156.218`	AS22843 PROOFPOINT-ASN-US-EAST - Proofpoint, Inc.	US	–

SPF

v=spf1 include:spf-001a7801.pphosted.com include:spf.mandrillapp.com include:spf-001a7803.pphosted.com include:_spf-sfdc.successfactors.com ip4:205.220.189.169 ip4:205.220.188.142 ip4:205.220.189.159 ip4:23.249.8.68 ip4:44.203.112.2 ip4:12.3.33.9 ip4:193.222.106.25 ~all

all: ~all
DNS lookups: 4 / 10
Includes: spf-001a7801.pphosted.comspf.mandrillapp.comspf-001a7803.pphosted.com_spf-sfdc.successfactors.com
Detected sending services: Proofpoint, Mailchimp/Mandrill, Mailchimp Transactional, SAP
IPv4: 7 addresses authorised directly

DMARC

v=DMARC1; p=none; fo=1; rua=mailto:dmarc_rua@emaildefense.proofpoint.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com

Policy: p=none
Subdomains (sp): inherits p=none
Share (pct): 100 %
Alignment DKIM/SPF: relaxed / relaxed
Aggregate reports (rua): dmarc_rua@emaildefense.proofpoint.com
Forensic reports (ruf): dmarc_ruf@emaildefense.proofpoint.com
Report services: Proofpoint EFD

DKIM

Selector	Key	delegated to
`mandrill`	RSA 1024	–
`s1`	RSA 2048	`s1.domainkey.u20799804.wl055.sendgrid.net`
`s2`	RSA 1024	`s2.domainkey.u20799804.wl055.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 365AppleAtlassianDocuSignAdobeOneTrustCanvaSmartsheet

History

19 October 2026 Score 49 · DMARC none

All changes of this organisation in the change log →

Raw data

cslbehring.com. IN MX 10 mxb-001a7801.gslb.pphosted.com.
cslbehring.com. IN MX 10 mxa-001a7801.gslb.pphosted.com.
cslbehring.com. IN TXT "v=spf1 include:spf-001a7801.pphosted.com include:spf.mandrillapp.com include:spf-001a7803.pphosted.com include:_spf-sfdc.successfactors.com ip4:205.220.189.169 ip4:205.220.188.142 ip4:205.220.189.159 ip4:23.249.8.68 ip4:44.203.112.2 ip4:12.3.33.9 ip4:193.222.106.25 ~all"
_dmarc.cslbehring.com. IN TXT "v=DMARC1; p=none; fo=1; rua=mailto:dmarc_rua@emaildefense.proofpoint.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com"

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