theoretical-biology.de

Valid Email Server
Domain Lookup › theoretical-biology.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
theoretical-biology.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-04 18:40:04 UTC · ↺ Refresh

MX Hostnames

  • smx00.udag.de
  • smx01.udag.de

MX Priorities

  • smx01.udag.de: 10
  • smx00.udag.de: 10

A / AAAA Records

  • 89.31.143.90 (no PTR)

Mail Server IPs

  • 62.146.106.51 ↩ smx01.udag.de
  • 62.146.106.50 ↩ smx00.udag.de

SOA Record

Raw SOA ns.udag.de hostmaster.united-domains.de 2024091729 10800 3600 604800 3600
Primary NS (mname)
ns.udag.de
Admin Email (rname)
hostmaster@united-domains.de
Serial
2024091729
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns.udag.org
ns.udag.net
ns.udag.de

SPF Record

✓ Soft Fail (~all)
v=spf1 mx ip6:2001:638:612:1::181 ip6:2001:638:612:1::180 ip4:193.175.244.0/24 ip4:134.0.25.89 include:spf.mailsupport.dfn.de ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; pct=100; adkim=s; aspf=s3600
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Strict
📧 Reports → mailto:[email protected]

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

2 records
  • SPFv=spf1 mx ip6:2001:638:612:1::181 ip6:2001:638:612:1::180 ip4:193.175.244.0/24 ip4:134.0.25.89 include:spf.mailsupport.dfn.de ~all
  • hibp-verify=dweb_ld4b1u8zfqx0khdnhtkldq85
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