Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
boulderwelt.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 04:10:57 UTC · ↺ Refresh
MX Hostnames
- boulderwelt-de.mail.protection.outlook.com
MX Priorities
- boulderwelt-de.mail.protection.outlook.com: 0
A / AAAA Records
- 116.202.244.254 ↩ boulderwelt.de
Mail Server IPs
- 52.101.73.24 ↩ mail-as8pr05cu00300.inbound.protection.outlook.com
- 52.101.68.3 ↩ mail-db7pr03cu00403.inbound.protection.outlook.com
- 52.101.73.22 ↩ mail-am7pr05cu00106.inbound.protection.outlook.com
- 52.101.73.28 ↩ mail-am7pr05cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca04::4 ↩ mail-db4pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca09::7 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
- 2a01:111:f403:ca09::8 ↩ mail-as2pr05cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09::f ↩ mail-am7pr05cu00307.inbound.protection.outlook.com
SOA Record
Raw SOA
hydrogen.ns.hetzner.com hostmaster.boulderwelt.de 2026022403 7200 1800 1209600 3600
Primary NS (mname)
hydrogen.ns.hetzner.com
Admin Email (rname)
hostmaster@boulderwelt.de
Serial
2026022403
Refresh
7200s
Retry
1800s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
oxygen.ns.hetzner.com
helium.ns.hetzner.de
hydrogen.ns.hetzner.com
SPF Record
✓ Strict (-all)
v=spf1 a mx ip4:149.72.190.99 ip4:149.72.246.141 include:spf.protection.outlook.com include:spf.nl2go.com include:spf.brevo.com include:mail.cxo-projects.com -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
mail._domainkey
dkim._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
5 records- facebook-domain-verification=myywfs9zjqkypgos4hhoravnsl45f0
- google-site-verification=cVOec0BNk3Go2LT0m0C9TjNB5eOQl6WVdgwpHzxLBsA
- have-i-been-pwned-verification=fffa24d43d8befb17980b9c6de1b61e5
- SPFv=spf1 a mx ip4:149.72.190.99 ip4:149.72.246.141 include:spf.protection.outlook.com include:spf.nl2go.com include:spf.brevo.com include:mail.cxo-projects.com -all
- brevo-code:1fc65b7ebf9e7b3526552bb26f6bbb42
Full email verification for boulderwelt.de
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