Gemeinde Männedorf
maennedorf.ch
- Industry
- Municipalities
- Headquarters
- Männedorf, Zurich
- Type
- public
- Population
- 11,764
- FSO no.
- 155
- Checked on
- 19 October 2026
Protection against forged senders: not protected (monitoring only)
Points per criterion
- MX 10 / 10
- SPF 15 / 15
- DKIM 20 / 20
- DMARC 6 / 25
- DNSSEC 0 / 10
- Transport (MTA-STS/DANE) 12 / 15
- TLS-RPT 0 / 5
- Industry avg.: 50.9 ▲ 12.1
- Canton avg.: 53 ▲ 10
- Overall avg.: 53.5 ▲ 9.5
- Rank 702 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 (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.
-
iDANE active (TLSA with DNSSEC)
All MX hosts publish TLSA records secured by DNSSEC.
Who runs the mail?
- Mailbox provider
- Microsoft 365
- Upstream gateway
- SEPPmail
- Provider jurisdiction
- USA · MX: CH
- Detection confidence
- 90 / 100
- Microsoft tenant
- Managed · maennedorf.ch
- Tenant region
- EU
Signals (3)
| SPF | Microsoft 365 | include:spf.protection.outlook.com |
|---|---|---|
| Domain verification | Microsoft 365 | MS=ms97264107 |
| Entra ID | Microsoft 365 | Entra-ID-Tenant (Managed) |
MX servers
| Pref | Host | IP | Network | Country | TLSA |
|---|---|---|---|---|---|
| 10 | maennedorf-ch.gate.seppmail.cloud | 86.119.35.35 | AS559 Switch - SWITCH | CH | ✓ DNSSEC |
217.20.196.81 | AS24951 EVERYWARE-NET - EveryWare AG | CH |
SPF
v=spf1 mx a:mail01.refline.ch a:mail02.refline.ch a:spf1.refline.ch a:spf2.refline.ch ip4:212.80.96.0/21 ip4:46.140.96.53 ip4:212.243.171.125 ip6:2a01:7480:1:100::/64 include:_spf.i-web.ch include:spf.protection.outlook.com include:_spf.ch.seppmail.cloud -all- all
-all- DNS lookups
- 8 / 10
- Includes
_spf.i-web.chspf.protection.outlook.com_spf.ch.seppmail.cloud- Detected sending services
- Microsoft 365, SEPPmail
- IPv4
- 2,050 addresses authorised directly
DMARC
v=DMARC1; p=none; rua=mailto:f3fe5853@in.mailhardener.com- Policy
- p=none
- Subdomains (sp)
- inherits p=none
- Share (pct)
- 100 %
- Alignment DKIM/SPF
- relaxed / relaxed
- Aggregate reports (rua)
f3fe5853@in.mailhardener.com- Report services
- Mailhardener
DKIM
| Selector | Key | delegated to |
|---|---|---|
default | RSA 2048 | – |
s1 | RSA 2048 | s1.domainkey.u1984813.wl064.sendgrid.net |
s2 | RSA 1024 | s2.domainkey.u1984813.wl064.sendgrid.net |
Checked: 100 common selectors. Keys under custom selectors remain invisible.
Transport encryption
- MTA-STS
- missing
- DANE
- active
- DNSSEC
- missing
- TLS-RPT
- missing
- BIMI
- missing
Verified services
From verification records in the domain TXT: services where the domain is verified.
Microsoft 365Apple
History
- Score 63 · DMARC none
Raw data
maennedorf.ch. IN MX 10 maennedorf-ch.gate.seppmail.cloud.
maennedorf.ch. IN TXT "v=spf1 mx a:mail01.refline.ch a:mail02.refline.ch a:spf1.refline.ch a:spf2.refline.ch ip4:212.80.96.0/21 ip4:46.140.96.53 ip4:212.243.171.125 ip6:2a01:7480:1:100::/64 include:_spf.i-web.ch include:spf.protection.outlook.com include:_spf.ch.seppmail.cloud -all"
_dmarc.maennedorf.ch. IN TXT "v=DMARC1; p=none; rua=mailto:f3fe5853@in.mailhardener.com"