Otto's
ottos.ch
64/100Grade C
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) 0 / 15
- TLS-RPT 0 / 5
- Industry avg.: 60.1 ▲ 3.9
- Canton avg.: 56.6 ▲ 7.4
- Overall avg.: 53.5 ▲ 10.5
- Rank 26 of 58 in the industry
Findings
-
!SPF close to the 10-lookup limit (9)
One more sending service can break the limit. Flattening or subdomains for third parties create headroom.
-
!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 · OTTO'S AG
- Tenant region
- EU
Signals (9)
| MX | Microsoft 365 | ottos-ch.x-v1.mx.microsoft |
|---|---|---|
| SPF | Microsoft 365 | include:spf.protection.outlook.com |
| DKIM | Microsoft 365 | selector1 → selector1-ottos-ch._domainkey.ottosagch.e-v1.dkim.mail.microsoft |
| Autodiscover | Microsoft 365 | autodiscover.outlook.com |
| Domain verification | Microsoft 365 | MS=ms59177870 |
| Network | Microsoft 365 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation |
| Domain verification | Google Workspace | google-site-verification=h7l2wgIrRZ2eo1R |
| Domain verification | Amazon | amazonses:gUIBX2aIdBaZ2DhJLpIexaPW0e/8Qy |
| Entra ID | Microsoft 365 | Entra-ID-Tenant (Managed) |
MX servers
| Pref | Host | IP | Network | Country | TLSA |
|---|---|---|---|---|---|
| 0 | ottos-ch.x-v1.mx.microsoft | 52.101.185.14 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US | – |
52.101.185.13 | 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 ip4:164.128.36.32 ip4:62.55.182.68 ip4:217.192.245.245 include:mailgun.org include:mail.zendesk.com include:spf.umantis.com include:spf.protection.outlook.com -all- all
-all- DNS lookups
- 9 / 10
- Includes
mailgun.orgmail.zendesk.comspf.umantis.comspf.protection.outlook.com- Detected sending services
- Mailgun, Zendesk, Microsoft 365
- IPv4
- 3 addresses authorised directly
DMARC
v=DMARC1; p=quarantine; rua=mailto:it@ottos.ch; fo=1;- Policy
- p=quarantine
- Subdomains (sp)
- inherits p=quarantine
- Share (pct)
- 100 %
- Alignment DKIM/SPF
- relaxed / relaxed
- Aggregate reports (rua)
it@ottos.ch
DKIM
| Selector | Key | delegated to |
|---|---|---|
selector1 | RSA 2048 | selector1-ottos-ch._domainkey.ottosagch.e-v1.dkim.mail.microsoft |
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 365GoogleAppleMeta/FacebookAtlassianCisco WebexAmazon SES
History
- Score 64 · DMARC quarantine
Raw data
ottos.ch. IN MX 0 ottos-ch.x-v1.mx.microsoft.
ottos.ch. IN TXT "v=spf1 mx ip4:164.128.36.32 ip4:62.55.182.68 ip4:217.192.245.245 include:mailgun.org include:mail.zendesk.com include:spf.umantis.com include:spf.protection.outlook.com -all"
_dmarc.ottos.ch. IN TXT " v=DMARC1; p=quarantine; rua=mailto:it@ottos.ch; fo=1;"