biberna.de

Valid Email Server
Domain Lookup › biberna.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
biberna.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-21 17:32:34 UTC · ↺ Refresh

MX Hostnames

  • linux.biberna.de

MX Priorities

  • linux.biberna.de: 10

A / AAAA Records

  • 188.68.49.220 ↩ www.biberna.de
  • fe80::a8ea:beff:fee9:7ef8 (no PTR)

Mail Server IPs

  • 46.245.220.146 ↩ linux.biberna.de

SOA Record

Raw SOA ns1095.ui-dns.com hostmaster.1und1.de 2016110266 28800 7200 604800 300
Primary NS (mname)
ns1095.ui-dns.com
Admin Email (rname)
hostmaster@1und1.de
Serial
2016110266
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

ns1095.ui-dns.org
ns1095.ui-dns.com
ns1095.ui-dns.de
ns1095.ui-dns.biz

SPF Record

✓ Strict (-all)
v=spf1 ip4:188.68.49.220 ip4:202.61.247.164 ip4:46.245.220.146 ip4:89.58.58.45 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 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

3 records
  • asap-site-verification-ec9ea780-b67d-47ee-9ea8-b0f60b6e0dde
  • SPFv=spf1 ip4:188.68.49.220 ip4:202.61.247.164 ip4:46.245.220.146 ip4:89.58.58.45 include:spf.protection.outlook.com -all
  • MS=ms44041694
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