Swiss Re
swissre.com
69/100Grade B
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 5 / 5
- Industry avg.: 58.6 ▲ 10.4
- Canton avg.: 53 ▲ 16
- Overall avg.: 53.5 ▲ 15.5
- Rank 12 of 35 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.
Who runs the mail?
- Mailbox provider
- Microsoft 365
- Provider jurisdiction
- USA · MX: US
- Detection confidence
- 100 / 100
- Microsoft tenant
- Managed · Swiss Reinsurance Company Ltd
- Tenant region
- EU
Signals (6)
| MX | Microsoft 365 | swissre-com.mail.protection.outlook.com |
|---|---|---|
| SPF | Microsoft 365 | include:spf.protection.outlook.com |
| DKIM | Microsoft 365 | selector1 → selector1-swissre-com._domainkey.swissre.onmicrosoft.com |
| Network | Microsoft 365 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation |
| Domain verification | Amazon | amazonses:ko8ciFhqIzO7h1sH1IjQ0S1+NCxGgC |
| Entra ID | Microsoft 365 | Entra-ID-Tenant (Managed) |
MX servers
| Pref | Host | IP | Network | Country | TLSA |
|---|---|---|---|---|---|
| 10 | swissre-com.mail.protection.outlook.com | 52.101.181.156 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US | – |
52.101.91.159 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US | |||
52.101.103.39 | AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | US |
SPF
v=spf1 include:spf.protection.outlook.com include:spf1.swissre.com include:spf2.swissre.com include:spf3.swissre.com include:spf4v2.swissre.com include:mail.zendesk.com -all- all
-all- DNS lookups
- 8 / 10
- Includes
spf.protection.outlook.comspf1.swissre.comspf2.swissre.comspf3.swissre.comspf4v2.swissre.commail.zendesk.com- Detected sending services
- Microsoft 365, Mailjet, Retarus, Zendesk
DMARC
v=DMARC1; p=quarantine; rua=mailto:kazvuheu@ag.eu.dmarcadvisor.com;- Policy
- p=quarantine
- Subdomains (sp)
- inherits p=quarantine
- Share (pct)
- 100 %
- Alignment DKIM/SPF
- relaxed / relaxed
- Aggregate reports (rua)
kazvuheu@ag.eu.dmarcadvisor.com- Report services
- DMARC Advisor
DKIM
| Selector | Key | delegated to |
|---|---|---|
mailjet | RSA 1024 | – |
s1 | RSA 2048 | s1.domainkey.u6593035.wl036.sendgrid.net |
s2 | RSA 1024 | s2.domainkey.u6593035.wl036.sendgrid.net |
selector1 | RSA 2048 | selector1-swissre-com._domainkey.swissre.onmicrosoft.com |
selector2 | RSA 2048 | selector2-swissre-com._domainkey.swissre.onmicrosoft.com |
Checked: 100 common selectors. Keys under custom selectors remain invisible.
Transport encryption
- MTA-STS
- missing
- DANE
- missing
- DNSSEC
- missing
- TLS-RPT
mailto:kazvuheu@tls.eu.dmarcadvisor.com- BIMI
- missing
Verified services
From verification records in the domain TXT: services where the domain is verified.
AtlassianAmazon SESMiroFigmaPostman
History
- Score 69 · DMARC quarantine
Raw data
swissre.com. IN MX 10 swissre-com.mail.protection.outlook.com.
swissre.com. IN TXT "v=spf1 include:spf.protection.outlook.com include:spf1.swissre.com include:spf2.swissre.com include:spf3.swissre.com include:spf4v2.swissre.com include:mail.zendesk.com -all"
_dmarc.swissre.com. IN TXT "v=DMARC1; p=quarantine; rua=mailto:kazvuheu@ag.eu.dmarcadvisor.com;"
_smtp._tls.swissre.com. IN TXT "v=TLSRPTv1; rua=mailto:kazvuheu@tls.eu.dmarcadvisor.com"