Stadt Bülach
buelach.ch
- Industry
- Municipalities
- Headquarters
- Bülach, Zurich
- Type
- public
- Population
- 24,590
- FSO no.
- 53
- Checked on
- 19 October 2026
61/100Grade 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 10 / 10
- Transport (MTA-STS/DANE) 0 / 15
- TLS-RPT 0 / 5
- Industry avg.: 50.9 ▲ 10.1
- Canton avg.: 53 ▲ 8
- Overall avg.: 53.5 ▲ 7.5
- Rank 783 of 2077 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 (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.
-
!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: CH, US
- Detection confidence
- 100 / 100
- Microsoft tenant
- Managed · Stadt Bülach
- Tenant region
- EU
Signals (7)
| MX | Microsoft 365 | buelach-ch.mail.protection.outlook.com |
|---|---|---|
| SPF | Microsoft 365 | include:spf.protection.outlook.com |
| Autodiscover | Microsoft 365 | autodiscover.outlook.com |
| Network | Microsoft 365 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation |
| Domain verification | Google Workspace | google-site-verification=DKfEM_qKHz-PXwy |
| Network | Swiss hoster | AS13030 INIT7 - Init7 (Switzerland) Ltd. |
| Entra ID | Microsoft 365 | Entra-ID-Tenant (Managed) |
MX servers
| Pref | Host | IP | Network | Country | TLSA |
|---|---|---|---|---|---|
| 0 | mailprotect3.itexacloud.ch | 77.109.143.149 | AS13030 INIT7 - Init7 (Switzerland) Ltd. | CH | – |
| 10 | buelach-ch.mail.protection.outlook.com | 52.101.103.162 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US | – |
52.101.73.126 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US | |||
52.101.103.143 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US |
SPF
v=spf1 a mx ip4:77.237.208.45 a:mail01.refline.ch a:mail02.refline.ch a:mail.friedaweb.de include:spf.rtp.ch include:spf.sendinblue.com include:spf.protection.outlook.com include:_spf.abxsec.com -all- all
-all- DNS lookups
- 9 / 10
- Includes
spf.rtp.chspf.sendinblue.comspf.protection.outlook.com_spf.abxsec.com- Detected sending services
- Brevo, Microsoft 365
- IPv4
- 1 addresses authorised directly
DMARC
v=DMARC1; p=none; sp=none; rua=mailto:dmarc@mailinblue.com!10m; ruf=mailto:dmarc@mailinblue.com!10m; rf=afrf; pct=100; ri=86400- Policy
- p=none
- Subdomains (sp)
- none
- Share (pct)
- 100 %
- Alignment DKIM/SPF
- relaxed / relaxed
- Aggregate reports (rua)
dmarc@mailinblue.com!10m- Forensic reports (ruf)
dmarc@mailinblue.com!10m
DKIM
| Selector | Key | delegated to |
|---|---|---|
mail | RSA 1024 | – |
Checked: 100 common selectors. Keys under custom selectors remain invisible.
Transport encryption
- MTA-STS
- missing
- DANE
- missing
- DNSSEC
- active
- TLS-RPT
- missing
- BIMI
- missing
Verified services
From verification records in the domain TXT: services where the domain is verified.
GoogleAppleZoomBrevoTeamViewer
History
- Score 61 · DMARC none
Raw data
buelach.ch. IN MX 0 mailprotect3.itexacloud.ch.
buelach.ch. IN MX 10 buelach-ch.mail.protection.outlook.com.
buelach.ch. IN TXT "v=spf1 a mx ip4:77.237.208.45 a:mail01.refline.ch a:mail02.refline.ch a:mail.friedaweb.de include:spf.rtp.ch include:spf.sendinblue.com include:spf.protection.outlook.com include:_spf.abxsec.com -all"
_dmarc.buelach.ch. IN TXT "v=DMARC1; p=none; sp=none; rua=mailto:dmarc@mailinblue.com!10m; ruf=mailto:dmarc@mailinblue.com!10m; rf=afrf; pct=100; ri=86400"