ADC Therapeutics

adctherapeutics.com

Industry: Pharma & biotech
Headquarters: Épalinges, Vaud
Type: listed
Employees (approx.): 250
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 19 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
Upstream gateway: Mimecast
Provider jurisdiction: USA · MX: US
Detection confidence: 99 / 100
Microsoft tenant: Managed · ADC Therapeutics
Tenant region: NA

Signals (5)

SPF	Microsoft 365	`include:spf.protection.outlook.com`
DKIM	Microsoft 365	`selector1 → selector1-adctherapeutics-com._domainkey.adctsa.onmicrosoft.com`
Autodiscover	Microsoft 365	`autodiscover.outlook.com`
Domain verification	Google Workspace	`google-site-verification=9Xa5DWCxZuj0RF4`
Entra ID	Microsoft 365	`Entra-ID-Tenant (Managed)`

MX servers

Pref	Host	IP	Network	Country	TLSA
10	`us-smtp-inbound-1.mimecast.com`	`170.10.132.221`	AS30031 MIMECAST-US - Mimecast North America Inc	US	–
		`170.10.128.242`	AS30031 MIMECAST-US - Mimecast North America Inc	US
		`170.10.132.141`	AS30031 MIMECAST-US - Mimecast North America Inc	US
10	`us-smtp-inbound-2.mimecast.com`	`170.10.132.141`	AS30031 MIMECAST-US - Mimecast North America Inc	US	–
		`170.10.128.141`	AS30031 MIMECAST-US - Mimecast North America Inc	US
		`170.10.132.242`	AS30031 MIMECAST-US - Mimecast North America Inc	US

SPF

v=spf1 include:us._netblocks.mimecast.com ip4:52.29.180.68 ip4:85.218.101.138 include:spf.protection.outlook.com include:_spf.salesforce.com -all

all: -all
DNS lookups: 4 / 10
Includes: us._netblocks.mimecast.comspf.protection.outlook.com_spf.salesforce.com
Detected sending services: Mimecast, Microsoft 365, Salesforce
IPv4: 2 addresses authorised directly

DMARC

v=DMARC1;p=none;rua=mailto:0fc3b37c97@rua.easydmarc.us;ruf=mailto:0fc3b37c97@ruf.easydmarc.us;fo=1;

Policy: p=none
Subdomains (sp): inherits p=none
Share (pct): 100 %
Alignment DKIM/SPF: relaxed / relaxed
Aggregate reports (rua): 0fc3b37c97@rua.easydmarc.us
Forensic reports (ruf): 0fc3b37c97@ruf.easydmarc.us
Report services: EasyDMARC

DKIM

Selector	Key	delegated to
`s1`	RSA 2048	`s1.domainkey.u19474700.wl201.sendgrid.net`
`s2`	RSA 1024	`s2.domainkey.u19474700.wl201.sendgrid.net`
`selector1`	RSA 2048	`selector1-adctherapeutics-com._domainkey.adctsa.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.

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History

19 October 2026 Score 51 · DMARC none

All changes of this organisation in the change log →

Raw data

adctherapeutics.com. IN MX 10 us-smtp-inbound-1.mimecast.com.
adctherapeutics.com. IN MX 10 us-smtp-inbound-2.mimecast.com.
adctherapeutics.com. IN TXT "v=spf1 include:us._netblocks.mimecast.com ip4:52.29.180.68 ip4:85.218.101.138 include:spf.protection.outlook.com include:_spf.salesforce.com -all"
_dmarc.adctherapeutics.com. IN TXT "v=DMARC1;p=none;rua=mailto:0fc3b37c97@rua.easydmarc.us;ruf=mailto:0fc3b37c97@ruf.easydmarc.us;fo=1;"

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