Gebäudeversicherung Kanton Zürich

gvz.ch

Industry: Insurance
Headquarters: Zürich, Zurich
Type: public
Employees (approx.): 200
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.: 58.6 ▼ 7.6
Canton avg.: 53 ▼ 2
Overall avg.: 53.5 ▼ 2.5
Rank 22 of 35 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.
!SPF close to the 10-lookup limit (10)

One more sending service can break the limit. Flattening or subdomains for third parties create headroom.
!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: Abraxas
Provider jurisdiction: USA · MX: CH
Detection confidence: 90 / 100
Microsoft tenant: Managed · GVZ
Tenant region: EU

Signals (3)

SPF	Microsoft 365	`include:spf.protection.outlook.com`
Domain verification	Microsoft 365	`MS=ms70558185`
Entra ID	Microsoft 365	`Entra-ID-Tenant (Managed)`

MX servers

Pref	Host	IP	Network	Country	TLSA
10	`mta1.abxsec.com`	`193.246.95.101`	AS9108 ABXnet - Abraxas Informatik AG	CH	–
10	`mta2.abxsec.com`	`193.246.95.121`	AS9108 ABXnet - Abraxas Informatik AG	CH	–

SPF

v=spf1 mx mx:umantis.com ip4:193.247.72.0/24 ip4:94.230.209.13 ip4:84.16.79.134 ip4:212.71.111.45 ip4:46.231.200.235 ip4:217.148.3.175 include:_spf.abxsec.com include:spf.tocco.ch include:spf.abacuscity.ch include:spf.protection.outlook.com include:mailing.eqs.com include:_spf.ewmail.com -all

all: -all
DNS lookups: 10 / 10
Includes: _spf.abxsec.comspf.tocco.chspf.abacuscity.chspf.protection.outlook.commailing.eqs.com_spf.ewmail.com
Detected sending services: Microsoft 365, Mailjet
IPv4: 261 addresses authorised directly

DMARC

v=DMARC1; p=none; rua=mailto:secsys-rua@abraxas.ch;

Policy: p=none
Subdomains (sp): inherits p=none
Share (pct): 100 %
Alignment DKIM/SPF: relaxed / relaxed
Aggregate reports (rua): secsys-rua@abraxas.ch

DKIM

Selector	Key	delegated to
`default`	RSA 2048	`default._domainkey.tocco.ch`
`k2`	RSA 2048	`dkim2.mcsv.net`
`k3`	RSA 2048	`dkim3.mcsv.net`
`mailjet`	RSA 1024	–

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 365AppleAtlassianMiro

History

18 October 2026 Score 51 · DMARC none

All changes of this organisation in the change log →

Raw data

gvz.ch. IN MX 10 mta1.abxsec.com.
gvz.ch. IN MX 10 mta2.abxsec.com.
gvz.ch. IN TXT "v=spf1 mx mx:umantis.com ip4:193.247.72.0/24 ip4:94.230.209.13 ip4:84.16.79.134 ip4:212.71.111.45 ip4:46.231.200.235 ip4:217.148.3.175 include:_spf.abxsec.com include:spf.tocco.ch include:spf.abacuscity.ch include:spf.protection.outlook.com include:mailing.eqs.com include:_spf.ewmail.com -all"
_dmarc.gvz.ch. IN TXT "v=DMARC1; p=none; rua=mailto:secsys-rua@abraxas.ch;"