Ziemer Ophthalmic Systems
ziemergroup.com
70/100Grade B
Protection against forged senders: protected
Points per criterion
- MX 10 / 10
- SPF 15 / 15
- DKIM 20 / 20
- DMARC 25 / 25
- DNSSEC 0 / 10
- Transport (MTA-STS/DANE) 0 / 15
- TLS-RPT 0 / 5
- Industry avg.: 59.8 ▲ 10.2
- Canton avg.: 53.1 ▲ 16.9
- Overall avg.: 53.5 ▲ 16.5
- Rank 12 of 26 in the industry
Findings
-
!SPF close to the 10-lookup limit (8)
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.
Who runs the mail?
- Mailbox provider
- Microsoft 365
- Provider jurisdiction
- USA · MX: US
- Detection confidence
- 100 / 100
- Microsoft tenant
- Managed · Ziemer Ophthalmic Systems AG
- Tenant region
- EU
Signals (7)
| MX | Microsoft 365 | ziemergroup-com.mail.protection.outlook.com |
|---|---|---|
| SPF | Microsoft 365 | include:spf.protection.outlook.com |
| DKIM | Microsoft 365 | selector1 → selector1-ziemergroup-com._domainkey.ziemergroup.onmicrosoft.com |
| Autodiscover | Microsoft 365 | autodiscover.outlook.com |
| Domain verification | Microsoft 365 | MS=ms85486058 |
| Network | Microsoft 365 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation |
| Entra ID | Microsoft 365 | Entra-ID-Tenant (Managed) |
MX servers
| Pref | Host | IP | Network | Country | TLSA |
|---|---|---|---|---|---|
| 3 | ziemergroup-com.mail.protection.outlook.com | 52.101.187.1 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US | – |
52.101.185.14 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US | |||
52.101.185.12 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US |
SPF
v=spf1 a mx include:spf.protection.outlook.com ip4:217.193.165.210 include:_spf.online.superoffice.com include:_clientspf.latitudelearning.com include:spf.protection.cyon.net include:_spf.intacct.com -all- all
-all- DNS lookups
- 8 / 10
- Includes
spf.protection.outlook.com_spf.online.superoffice.com_clientspf.latitudelearning.comspf.protection.cyon.net_spf.intacct.com- Detected sending services
- Microsoft 365, Mailgun
- IPv4
- 1 addresses authorised directly
DMARC
v=DMARC1; p=reject; pct=100; rua=mailto:itadmins@ziemergroup.com,mailto:dmarc_agg@vali.email; fo=1- Policy
- p=reject
- Subdomains (sp)
- inherits p=reject
- Share (pct)
- 100 %
- Alignment DKIM/SPF
- relaxed / relaxed
- Aggregate reports (rua)
itadmins@ziemergroup.comdmarc_agg@vali.email
DKIM
| Selector | Key | delegated to |
|---|---|---|
default | RSA 2048 | – |
k2 | RSA 2048 | dkim2.mcsv.net |
k3 | RSA 2048 | dkim3.mcsv.net |
selector1 | RSA 1024 | selector1-ziemergroup-com._domainkey.ziemergroup.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 365AtlassianFigma
History
- Score 70 · DMARC reject
Raw data
ziemergroup.com. IN MX 3 ziemergroup-com.mail.protection.outlook.com.
ziemergroup.com. IN TXT "v=spf1 a mx include:spf.protection.outlook.com ip4:217.193.165.210 include:_spf.online.superoffice.com include:_clientspf.latitudelearning.com include:spf.protection.cyon.net include:_spf.intacct.com -all"
_dmarc.ziemergroup.com. IN TXT "v=DMARC1; p=reject; pct=100; rua=mailto:itadmins@ziemergroup.com,mailto:dmarc_agg@vali.email; fo=1"