Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
boelterbergen.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-01 07:39:38 UTC · ↺ Refresh
MX Hostnames
- mail2.boelterbergen.de
- mail.boelterbergen.de
MX Priorities
- mail.boelterbergen.de: 10
- mail2.boelterbergen.de: 20
A / AAAA Records
- 78.47.80.144 ↩ noether.1tau.de
- 2a01:4f8:1c17:429d::1 ↩ noether.1tau.de
Mail Server IPs
- 195.201.18.172 ↩ curie.1tau.de
- 2a01:4f8:1c0c:4ab6::1 ↩ curie.1tau.de
- 78.47.80.144 ↩ noether.1tau.de
- 2a01:4f8:1c17:429d::1 ↩ noether.1tau.de
SOA Record
Raw SOA
hydrogen.ns.hetzner.com dns.hetzner.com 2026021200 14400 1800 1209600 3600
Primary NS (mname)
hydrogen.ns.hetzner.com
Admin Email (rname)
dns@hetzner.com
Serial
2026021200
Refresh
14400s
Retry
1800s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
hydrogen.ns.hetzner.com
oxygen.ns.hetzner.com
helium.ns.hetzner.de
SPF Record
✓ Strict (-all)
v=spf1 a:mail.boelterbergen.de a:mail2.boelterbergen.de ip4:195.201.18.172 ip4:78.47.80.144 ip6:2a01:4f8:1c0c:4ab6::1 ip6:2a01:4f8:1c17:429d::1 -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 1 found
mail._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 a:mail.boelterbergen.de a:mail2.boelterbergen.de ip4:195.201.18.172 ip4:78.47.80.144 ip6:2a01:4f8:1c0c:4ab6::1 ip6:2a01:4f8:1c17:429d::1 -all
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