VZ Holding
vzch.com
- Industry
- Financial services
- Headquarters
- Zug, Zug
- Type
- listed
- Employees (approx.)
- 1,600
- Checked on
- 19 October 2026
81/100Grade B
Protection against forged senders: largely protected
Points per criterion
- MX 10 / 10
- SPF 15 / 15
- DKIM 20 / 20
- DMARC 19 / 25
- DNSSEC 0 / 10
- Transport (MTA-STS/DANE) 12 / 15
- TLS-RPT 5 / 5
- Industry avg.: 61.8 ▲ 19.2
- Canton avg.: 63.2 ▲ 17.8
- Overall avg.: 53.5 ▲ 27.5
- Rank 4 of 40 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.
-
iBIMI with mark certificate (VMC/CMC)
Logo with a verified mark certificate, shown by Gmail and Apple Mail among others. Requires DMARC enforcement.
Who runs the mail?
- Mailbox provider
- Microsoft 365
- Provider jurisdiction
- USA · MX: US
- Detection confidence
- 100 / 100
- Microsoft tenant
- Managed · VZ IT
- Tenant region
- EU
Signals (8)
| MX | Microsoft 365 | vzch-com.mail.protection.outlook.com |
|---|---|---|
| SPF | Microsoft 365 | include:spf.protection.outlook.com |
| DKIM | Microsoft 365 | selector1 → selector1-vzch-com._domainkey.vzit.onmicrosoft.com |
| Autodiscover | Microsoft 365 | autodiscover.outlook.com |
| Domain verification | Microsoft 365 | MS=ms97292091 |
| Network | Microsoft 365 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation |
| Domain verification | Swiss hoster | protonmail-verification=7bfefa6e286655fc |
| Entra ID | Microsoft 365 | Entra-ID-Tenant (Managed) |
MX servers
| Pref | Host | IP | Network | Country | TLSA |
|---|---|---|---|---|---|
| 0 | vzch-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 include:spf.protection.outlook.com ip4:185.238.12.20 ip4:185.238.12.21 ip4:93.190.78.23 ip4:93.190.78.24 ip4:185.238.12.22 a:hybridexchange.vzch.com a:crossware-pro-chn-aks01.vzch.com a:crossware-pro-chn-aks02.vzch.com -all- all
-all- DNS lookups
- 5 / 10
- Includes
spf.protection.outlook.com- Detected sending services
- Microsoft 365
- IPv4
- 5 addresses authorised directly
DMARC
v=DMARC1; p=quarantine; sp=quarantine; rua=mailto:fkl9e2544h@rua.powerdmarc.com,mailto:mailauth-reports@vzch.com; ruf=mailto:mailauth-reports@vzch.com; fo=1;- Policy
- p=quarantine
- Subdomains (sp)
- quarantine
- Share (pct)
- 100 %
- Alignment DKIM/SPF
- relaxed / relaxed
- Aggregate reports (rua)
fkl9e2544h@rua.powerdmarc.commailauth-reports@vzch.com- Forensic reports (ruf)
mailauth-reports@vzch.com- Report services
- PowerDMARC
DKIM
| Selector | Key | delegated to |
|---|---|---|
selector1 | RSA 1024 | selector1-vzch-com._domainkey.vzit.onmicrosoft.com |
selector2 | RSA 1024 | selector2-vzch-com._domainkey.vzit.onmicrosoft.com |
Checked: 100 common selectors. Keys under custom selectors remain invisible.
Transport encryption
- MTA-STS
- Mode: enforce · max_age: 86,400 s · covers all MX: yes
- mx
vzch-com.mail.protection.outlook.com- DANE
- missing
- DNSSEC
- missing
- TLS-RPT
mailto:fkl9e2544h@tls.powerdmarc.commailto:mta-sts@vzch.ch- BIMI
- VMC/CMC ✓ · Logo
Verified services
From verification records in the domain TXT: services where the domain is verified.
Microsoft 365AtlassianFigma
History
- Score 81 · DMARC quarantine
Raw data
vzch.com. IN MX 0 vzch-com.mail.protection.outlook.com.
vzch.com. IN TXT "v=spf1 mx include:spf.protection.outlook.com ip4:185.238.12.20 ip4:185.238.12.21 ip4:93.190.78.23 ip4:93.190.78.24 ip4:185.238.12.22 a:hybridexchange.vzch.com a:crossware-pro-chn-aks01.vzch.com a:crossware-pro-chn-aks02.vzch.com -all"
_dmarc.vzch.com. IN TXT "v=DMARC1; p=quarantine; sp=quarantine; rua=mailto:fkl9e2544h@rua.powerdmarc.com,mailto:mailauth-reports@vzch.com; ruf=mailto:mailauth-reports@vzch.com; fo=1;"
_mta-sts.vzch.com. IN TXT "v=STSv1; id=20251215084955118259"
_smtp._tls.vzch.com. IN TXT "v=TLSRPTv1; rua=mailto:fkl9e2544h@tls.powerdmarc.com,mailto:mta-sts@vzch.ch"
default._bimi.vzch.com. IN TXT "v=BIMI1; l=https://vmc.digicert.com/f62a5821-03ec-42b4-848b-c00869c65b22.svg; a=…"