VISCHER

vischer.com

Industry: Consulting & audit
Headquarters: Zürich, Zurich
Type: private
Employees (approx.): 220
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.: 66.8 ▼ 17.8
Canton avg.: 53 ▼ 4
Overall avg.: 53.5 ▼ 4.5
Rank 41 of 45 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: CH, AT, US
Detection confidence: 100 / 100
Microsoft tenant: Managed · VISCHER AG
Tenant region: EU

Signals (8)

MX	Microsoft 365	`vischer-com.mail.protection.outlook.com`
SPF	Microsoft 365	`include:spf.protection.outlook.com`
DKIM	Microsoft 365	`selector1 → selector1-vischer-com._domainkey.vischeragch.onmicrosoft.com`
Autodiscover	Microsoft 365	`autodiscover.outlook.com`
Domain verification	Microsoft 365	`MS=ms58547226`
Network	Microsoft 365	`AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation`
Domain verification	Google Workspace	`google-site-verification=MJpuAp9mqEGekuF`
Entra ID	Microsoft 365	`Entra-ID-Tenant (Managed)`

MX servers

Pref	Host	IP	Network	Country	TLSA
10	`mx6.nashire.com`	`185.203.115.13`	AS213081 ungleich-place10 - ungleich glarus ag	CH	–
10	`mx7.nashire.com`	`193.26.159.242`	AS197540 netcup-AS - netcup GmbH	AT	–
10	`mx5.nashire.com`	`185.203.115.8`	AS213081 ungleich-place10 - ungleich glarus ag	CH	–
20	`vischer-com.mail.protection.outlook.com`	`52.101.185.12`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US	–
		`52.101.185.14`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US
		`52.101.187.1`	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	US

SPF

v=spf1 mx ip4:141.98.26.36 ip4:217.148.8.157 ip4:194.209.245.229 ip4:194.209.245.231 ip4:194.209.245.232 ip4:217.148.8.174 ip4:81.173.83.55 include:spf.protection.outlook.com include:spf.sendinblue.com include:spf.mtfweb.ch include:_spf.sui-inter.net ~all

all: ~all
DNS lookups: 6 / 10
Includes: spf.protection.outlook.comspf.sendinblue.comspf.mtfweb.ch_spf.sui-inter.net
Detected sending services: Microsoft 365, Brevo
IPv4: 7 addresses authorised directly

DMARC

v=DMARC1; p=none; sp=none; rua=mailto:dmarc@mailinblue.com!10m; ruf=mailto:dmarc@mailinblue.com!10m; rf=afrf; pct=100; ri=86400

Policy: p=none
Subdomains (sp): none
Share (pct): 100 %
Alignment DKIM/SPF: relaxed / relaxed
Aggregate reports (rua): dmarc@mailinblue.com!10m
Forensic reports (ruf): dmarc@mailinblue.com!10m

DKIM

Selector	Key	delegated to
`cm`	RSA 1024	–
`k2`	RSA 2048	`dkim2.mcsv.net`
`k3`	RSA 2048	`dkim3.mcsv.net`
`mail`	RSA 1024	–
`selector1`	RSA 2048	`selector1-vischer-com._domainkey.vischeragch.onmicrosoft.com`
`selector2`	RSA 2048	`selector2-vischer-com._domainkey.vischeragch.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 365GoogleAdobeCisco WebexBrevoCitrix

History

19 October 2026 Score 49 · DMARC none

All changes of this organisation in the change log →

Raw data

vischer.com. IN MX 10 mx6.nashire.com.
vischer.com. IN MX 10 mx7.nashire.com.
vischer.com. IN MX 10 mx5.nashire.com.
vischer.com. IN MX 20 vischer-com.mail.protection.outlook.com.
vischer.com. IN TXT "v=spf1 mx ip4:141.98.26.36 ip4:217.148.8.157 ip4:194.209.245.229 ip4:194.209.245.231 ip4:194.209.245.232 ip4:217.148.8.174 ip4:81.173.83.55 include:spf.protection.outlook.com include:spf.sendinblue.com include:spf.mtfweb.ch include:_spf.sui-inter.net ~all"
_dmarc.vischer.com. IN TXT "v=DMARC1; p=none; sp=none; rua=mailto:dmarc@mailinblue.com!10m; ruf=mailto:dmarc@mailinblue.com!10m; rf=afrf; pct=100; ri=86400"

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