Corriere del Ticino

cdt.ch

Industry: Telecom, IT & media
Headquarters: Muzzano, Ticino
Type: private
Employees (approx.): 400
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.: 63.6 ▼ 12.6
Canton avg.: 43.3 ▲ 7.7
Overall avg.: 53.5 ▼ 2.5
Rank 40 of 50 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: IT
Detection confidence: 84 / 100
Microsoft tenant: Managed · Corriere del Ticino SA
Tenant region: EU

Signals (6)

SPF	Microsoft 365	`include:spf.protection.outlook.com`
Autodiscover	Microsoft 365	`autodiscover.outlook.com`
Domain verification	Microsoft 365	`MS=ms65333233`
Domain verification	Google Workspace	`google-site-verification=bVo9QDjCi5aamXt`
SPF	Amazon	`include:amazonses.com`
Entra ID	Microsoft 365	`Entra-ID-Tenant (Managed)`

MX servers

Pref	Host	IP	Network	Country	TLSA
0	`backup-mailsecurity.cybersecservices.ch`	`109.168.30.3`	AS5602 AS-IRIDEOS-KP - Retelit Digital Services S.p.A.	IT	–
10	`mailsecurity.cybersecservices.ch`	`85.159.115.131`	AS31034 ARUBA-ASN - Aruba S.p.A.	IT	–

SPF

v=spf1 include:spf.mandrillapp.com include:servers.mcsv.net include:sendgrid.net include:amazonses.com include:spf.protection.outlook.com mx ip4:207.67.38.0/24 ip4:207.250.68.0/24 ip4:64.132.92.0/24 ip4:64.132.88.0/24 -all

all: -all
DNS lookups: 7 / 10
Includes: spf.mandrillapp.comservers.mcsv.netsendgrid.netamazonses.comspf.protection.outlook.com
Detected sending services: Mailchimp/Mandrill, Mailchimp Transactional, SendGrid, Amazon SES, Microsoft 365
IPv4: 1,024 addresses authorised directly

DMARC

v=DMARC1; p=none; fo=1; rua=mailto:abuse@cdt.ch; ruf=mailto:abuse@cdt.ch

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

DKIM

Selector	Key	delegated to
`mandrill`	RSA 1024	–
`s1`	RSA 2048	`s1.domainkey.u19262273.wl024.sendgrid.net`
`s2`	RSA 1024	`s2.domainkey.u19262273.wl024.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 365GoogleAdobe

History

19 October 2026 Score 51 · DMARC none

All changes of this organisation in the change log →

Raw data

cdt.ch. IN MX 0 backup-mailsecurity.cybersecservices.ch.
cdt.ch. IN MX 10 mailsecurity.cybersecservices.ch.
cdt.ch. IN TXT "v=spf1 include:spf.mandrillapp.com include:servers.mcsv.net include:sendgrid.net include:amazonses.com include:spf.protection.outlook.com mx ip4:207.67.38.0/24 ip4:207.250.68.0/24 ip4:64.132.92.0/24 ip4:64.132.88.0/24 -all"
_dmarc.cdt.ch. IN TXT "v=DMARC1; p=none; fo=1; rua=mailto:abuse@cdt.ch; ruf=mailto:abuse@cdt.ch"

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