Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
guh-gruppe.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 10:41:01 UTC · ↺ Refresh
MX Hostnames
- guhgruppe-de0i.mail.protection.outlook.com
MX Priorities
- guhgruppe-de0i.mail.protection.outlook.com: 10
A / AAAA Records
- 20.71.80.38 (no PTR)
Mail Server IPs
- 52.101.68.8 ↩ mail-du0pr03cu00100.inbound.protection.outlook.com
- 52.101.73.6 ↩ mail-am6pr04cu00306.inbound.protection.outlook.com
- 52.101.68.5 ↩ mail-du2pr03cu00105.inbound.protection.outlook.com
- 52.101.73.12 ↩ mail-am4pr0401cu00104.inbound.protection.outlook.com
SOA Record
Raw SOA
ns0.infravesi.com postmaster.vinci-energies.com 2014104895 1200 300 1209600 3600
Primary NS (mname)
ns0.infravesi.com
Admin Email (rname)
postmaster@vinci-energies.com
Serial
2014104895
Refresh
1200s
Retry
300s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
nsb.perf1.com
ns1.infravesi.com
nsa.perf1.fr
ns0.infravesi.com
nsc.perf1.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spf.protection.vinci-energies.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; pct=100; sp=reject
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
6 records- SPFv=spf1 include:spf.protection.outlook.com include:spf.protection.vinci-energies.com -all
- v=msv1 t=8687297C-5278-46BF-A690-BFC8B5F8629A
- dell-technologies-domain-verification=guh-gruppe.de_2c318245-d847-444d-9321-3f48a0e60e7a_1721388751
- MS=ms90967665
- l%ZuOIe6hyq9Dj^LdO3jWN5zkNY6W6^IyZ4UW@@R#zwgKEunp2pgC5V7K*YM88h4v7Z^A9oKOAyj^C6i0Tccj6FHaW^9ME!NYau
- /SsvfOe5s76dWyak42CWMUuJCjSxQ8SmgB/We/aqlDfD0P3VWrGq9IP3ccyUogXVrhPixjhTbKEK+Fw3hklklA==
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