Brack.ch (Competec)
brack.ch
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.: 60.1 ▲ 9.9
- Canton avg.: 57.3 ▲ 12.7
- Overall avg.: 53.5 ▲ 16.5
- Rank 9 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.
-
!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.
-
iStrict DMARC alignment
adkim=s or aspf=s requires exact domain matches. Secure, but demanding when sending from subdomains.
-
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
- Federated · Brack.Alltron AG
- Tenant region
- EU
- Federated via
sso-571e8850.sso.duosecurity.com
Signals (9)
| MX | Microsoft 365 | brack-ch.mail.protection.outlook.com |
|---|---|---|
| SPF | Microsoft 365 | include:spf.protection.outlook.com |
| DKIM | Microsoft 365 | selector1 → selector1-brack-ch._domainkey.competecch.onmicrosoft.com |
| Autodiscover | Microsoft 365 | autodiscover.outlook.com |
| Domain verification | Microsoft 365 | MS=ms92307678 |
| Network | Microsoft 365 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation |
| Domain verification | Google Workspace | google-site-verification=bgjiw5wo6cgUeTI |
| SPF | Amazon | include:amazonses.com |
| Entra ID | Microsoft 365 | Entra-ID-Tenant (Federated) |
MX servers
| Pref | Host | IP | Network | Country | TLSA |
|---|---|---|---|---|---|
| 0 | brack-ch.mail.protection.outlook.com | 52.101.185.13 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US | – |
52.101.185.12 | 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 include:_spf.competec.ch include:spf.eu.exclaimer.net include:emarsys.net include:spf.protection.outlook.com include:spf.umantis.com include:spf.mailjet.com include:emsmtp.com ip4:139.3.183.0/25 include:amazonses.com -all- all
-all- DNS lookups
- 9 / 10
- Includes
_spf.competec.chspf.eu.exclaimer.netemarsys.netspf.protection.outlook.comspf.umantis.comspf.mailjet.comemsmtp.comamazonses.com- Detected sending services
- Emarsys, Microsoft 365, Mailjet, Amazon SES
- IPv4
- 128 addresses authorised directly
DMARC
v=DMARC1; p=reject; aspf=s; adkim=s; rua=mailto:dmarc-reports@brack.ch; ruf=mailto:dmarc-reports@brack.ch; fo=1- Policy
- p=reject
- Subdomains (sp)
- inherits p=reject
- Share (pct)
- 100 %
- Alignment DKIM/SPF
- strict / strict
- Aggregate reports (rua)
dmarc-reports@brack.ch- Forensic reports (ruf)
dmarc-reports@brack.ch
DKIM
| Selector | Key | delegated to |
|---|---|---|
mailjet | RSA 1024 | – |
s1 | RSA 2048 | s1.domainkey.u10355749.wl250.sendgrid.net |
s2 | RSA 1024 | s2.domainkey.u10355749.wl250.sendgrid.net |
selector1 | RSA 1024 | selector1-brack-ch._domainkey.competecch.onmicrosoft.com |
selector2 | RSA 1024 | selector2-brack-ch._domainkey.competecch.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
- VMC/CMC ✓ · Logo
Verified services
From verification records in the domain TXT: services where the domain is verified.
Microsoft 365GoogleAppleMeta/FacebookAtlassianSlack
History
- Score 70 · DMARC reject
Raw data
brack.ch. IN MX 0 brack-ch.mail.protection.outlook.com.
brack.ch. IN TXT "v=spf1 include:_spf.competec.ch include:spf.eu.exclaimer.net include:emarsys.net include:spf.protection.outlook.com include:spf.umantis.com include:spf.mailjet.com include:emsmtp.com ip4:139.3.183.0/25 include:amazonses.com -all"
_dmarc.brack.ch. IN TXT "v=DMARC1; p=reject; aspf=s; adkim=s; rua=mailto:dmarc-reports@brack.ch; ruf=mailto:dmarc-reports@brack.ch; fo=1"
default._bimi.brack.ch. IN TXT "v=BIMI1; l=https://vmc.digicert.com/d2617d44-ef08-40ae-8875-675018a3bc8d.svg; a=…"