Rieter

rieter.com

Industry: Machinery & electrical
Headquarters: Winterthur, Zurich
Type: listed
Employees (approx.): 4,600
Checked on: 19 October 2026

74/100Grade B

Protection against forged senders: largely protected

Points per criterion

MX 10 / 10
SPF 15 / 15
DKIM 20 / 20
DMARC 19 / 25
DNSSEC 10 / 10
Transport (MTA-STS/DANE) 0 / 15
TLS-RPT 0 / 5

Industry avg.: 62.2 ▲ 11.8
Canton avg.: 53 ▲ 21
Overall avg.: 53.5 ▲ 20.5
Rank 14 of 112 in the industry

Findings

!SPF close to the 10-lookup limit (10)

One more sending service can break the limit. Flattening or subdomains for third parties create headroom.
!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: CH
Detection confidence: 100 / 100
Microsoft tenant: Managed · Rieter Ltd.
Tenant region: EU

Signals (9)

SPF	Microsoft 365	`include:spf.protection.outlook.com`
DKIM	Microsoft 365	`selector1 → selector1-rieter-com._domainkey.rieter.onmicrosoft.com`
Autodiscover	Microsoft 365	`autodiscover.outlook.com`
Domain verification	Microsoft 365	`MS=ms95830217`
Domain verification	Google Workspace	`google-site-verification=I8Pv2k5gmQlkz4N`
SPF	Amazon	`include:amazonses.com`
Network	Swisscom	`AS3303 SWISSCOM - Swisscom (Schweiz) AG`
SPF	European hoster	`include:mailbox.org`
Entra ID	Microsoft 365	`Entra-ID-Tenant (Managed)`

MX servers

Pref	Host	IP	Network	Country	TLSA
10	`mail2.rieter.com`	`194.209.125.185`	AS3303 SWISSCOM - Swisscom (Schweiz) AG	CH	–
10	`mail1.rieter.com`	`194.209.125.184`	AS3303 SWISSCOM - Swisscom (Schweiz) AG	CH	–

SPF

v=spf1 ip4:77.74.4.144 ip4:46.227.224.147 ip6:2a02:cd8:abac:27::13 ip4:194.209.125.184 ip4:194.209.125.185 ip4:5.148.188.89 ip4:5.148.188.90  ip4:212.243.119.59 ip4:5.148.188.94 ip4:212.55.204.8 ip4:3.123.206.219 ip4:3.68.129.51 ip4:107.20.210.250 ip4:52.1.14.157 ip4:54.229.2.165 ip4:52.30.130.201 ip4:54.153.131.110 ip4:54.66.252.242 include:servers.mcsv.net include:sendgrid.net include:spf.lamapoll.de include:mailing.eqs.com include:amazonses.com include:spf.protection.outlook.com -all

all: -all
DNS lookups: 10 / 10
Includes: servers.mcsv.netsendgrid.netspf.lamapoll.demailing.eqs.comamazonses.comspf.protection.outlook.com
Detected sending services: Mailchimp/Mandrill, SendGrid, Mailjet, Amazon SES, Microsoft 365
IPv4: 17 addresses authorised directly

DMARC

v=DMARC1;p=quarantine;rua=mailto:51d7d1c8478c456bbef8d08f2a21e3c9@dmarc-reports.cloudflare.net,mailto:dmarc.notification@rieter.com;ruf=mailto:dmarc.notification@rieter.com

Policy: p=quarantine
Subdomains (sp): inherits p=quarantine
Share (pct): 100 %
Alignment DKIM/SPF: relaxed / relaxed
Aggregate reports (rua): 51d7d1c8478c456bbef8d08f2a21e3c9@dmarc-reports.cloudflare.netdmarc.notification@rieter.com
Forensic reports (ruf): dmarc.notification@rieter.com
Report services: Cloudflare

DKIM

Selector	Key	delegated to
`k2`	RSA 2048	`dkim2.mcsv.net`
`k3`	RSA 2048	`dkim3.mcsv.net`
`mailjet`	RSA 2048	–
`s3`	RSA 2048	`s3.domainkey.u2489411.wl162.sendgrid.net`
`selector1`	RSA 2048	`selector1-rieter-com._domainkey.rieter.onmicrosoft.com`

Checked: 100 common selectors. Keys under custom selectors remain invisible.

Transport encryption

MTA-STS: missing
DANE: missing
DNSSEC: active
TLS-RPT: missing
BIMI: missing

Verified services

From verification records in the domain TXT: services where the domain is verified.

Microsoft 365Google

History

18 October 2026 Score 74 · DMARC quarantine

All changes of this organisation in the change log →

Raw data

rieter.com. IN MX 10 mail2.rieter.com.
rieter.com. IN MX 10 mail1.rieter.com.
rieter.com. IN TXT "v=spf1 ip4:77.74.4.144 ip4:46.227.224.147 ip6:2a02:cd8:abac:27::13 ip4:194.209.125.184 ip4:194.209.125.185 ip4:5.148.188.89 ip4:5.148.188.90  ip4:212.243.119.59 ip4:5.148.188.94 ip4:212.55.204.8 ip4:3.123.206.219 ip4:3.68.129.51 ip4:107.20.210.250 ip4:52.1.14.157 ip4:54.229.2.165 ip4:52.30.130.201 ip4:54.153.131.110 ip4:54.66.252.242 include:servers.mcsv.net include:sendgrid.net include:spf.lamapoll.de include:mailing.eqs.com include:amazonses.com include:spf.protection.outlook.com -all"
_dmarc.rieter.com. IN TXT "v=DMARC1;p=quarantine;rua=mailto:51d7d1c8478c456bbef8d08f2a21e3c9@dmarc-reports.cloudflare.net,mailto:dmarc.notification@rieter.com;ruf=mailto:dmarc.notification@rieter.com"

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