Alcon

alcon.com

Industry: Medtech
Headquarters: Genf, Geneva
Type: listed
Employees (approx.): 25,000
Checked on: 19 October 2026

70/100Grade B

Protection against forged senders: protected

Points per criterion

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

Industry avg.: 59.8 ▲ 10.2
Canton avg.: 51.9 ▲ 18.1
Overall avg.: 53.5 ▲ 16.5
Rank 5 of 26 in the industry

Findings

!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: 88 / 100
Microsoft tenant: Managed · Alcon
Tenant region: NA

Signals (7)

MX	Microsoft 365	`alcon-com.mail.protection.outlook.com`
DKIM	Microsoft 365	`selector1 → selector1-alcon-com._domainkey.alcon365.onmicrosoft.com`
Autodiscover	Microsoft 365	`autodiscover.outlook.com`
Domain verification	Microsoft 365	`MS=ms50410465`
Network	Microsoft 365	`AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation`
Domain verification	Google Workspace	`google-site-verification=KWktzcFMQbJIqX8`
Entra ID	Microsoft 365	`Entra-ID-Tenant (Managed)`

MX servers

Pref	Host	IP	Network	Country	TLSA
0	`alcon-com.mail.protection.outlook.com`	`52.101.60.188`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US	–
		`52.101.42.14`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US
		`52.101.60.65`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US

SPF

v=spf1 redirect=b0f5qc91._spf._d.mim.ec

all: -all
DNS lookups: 7 / 10
Includes: b0f5qc91._spf._d.mim.ecb0f5qc911._spf._d.mim.ec
IPv4: 47,186 addresses authorised directly

DMARC

v=DMARC1; p=reject; rua=mailto:f762a5e1e929449@rep.dmarcanalyzer.com; ruf=mailto:f762a5e1e929449@for.dmarcanalyzer.com; fo=1;

Policy: p=reject
Subdomains (sp): inherits p=reject
Share (pct): 100 %
Alignment DKIM/SPF: relaxed / relaxed
Aggregate reports (rua): f762a5e1e929449@rep.dmarcanalyzer.com
Forensic reports (ruf): f762a5e1e929449@for.dmarcanalyzer.com

DKIM

Selector	Key	delegated to
`ctct1`	RSA 2048	`100._domainkey.dkim1.ccsend.com`
`ctct2`	RSA 2048	`200._domainkey.dkim2.ccsend.com`
`mail2`	RSA 2048	–
`s1`	RSA 2048	`s1.domainkey.u11997098.wl099.sendgrid.net`
`s2`	RSA 1024	`s2.domainkey.u11997098.wl099.sendgrid.net`
`selector1`	RSA 2048	`selector1-alcon-com._domainkey.alcon365.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 365GoogleMeta/FacebookAtlassianDocuSignAdobeZoomGlobalSignOneTrustCanvaSmartsheet

History

18 October 2026 Score 70 · DMARC reject

All changes of this organisation in the change log →

Raw data

alcon.com. IN MX 0 alcon-com.mail.protection.outlook.com.
alcon.com. IN TXT "v=spf1 redirect=b0f5qc91._spf._d.mim.ec"
_dmarc.alcon.com. IN TXT "v=DMARC1; p=reject; rua=mailto:f762a5e1e929449@rep.dmarcanalyzer.com; ruf=mailto:f762a5e1e929449@for.dmarcanalyzer.com; fo=1;"

More from this industry

← Back to overview