Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
nhz-suedring.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-22 10:37:01 UTC · ↺ Refresh
MX Hostnames
- mx.uu.org
- mail.4830.org
MX Priorities
- mx.uu.org: 10
- mail.4830.org: 20
A / AAAA Records
- 136.243.22.51 ↩ static.51.22.243.136.clients.your-server.de
- 2a01:4f8:211:132a:400:88ff:fef3:1633 (no PTR)
Mail Server IPs
- 87.253.188.136 ↩ mx.uu.org
- 192.251.226.74 ↩ mx.uu.org
- 2a06:e881:1702:1::57ff:fefd:bc88 (no PTR)
- 2a06:e881:1700:1:400:c0ff:fefb:e24 (no PTR)
- 193.26.120.251 ↩ mail.4830.org
- 2a06:e881:2604:42::4 (no PTR)
SOA Record
Raw SOA
librarian.uu.org librarian.uu.org 2023052501 14400 3600 3600000 86400
Primary NS (mname)
librarian.uu.org
Admin Email (rname)
librarian@uu.org
Serial
2023052501
Refresh
14400s
Retry
3600s
Expire
3600000s
Minimum TTL
86400s
Nameservers (NS)
dns-gut.4830.org
librarian.uu.org
dns-fks.uu.org
SPF Record
✓ Soft Fail (~all)
v=spf1 a mx a:postoffice.uu.org ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1:d:s; adkim=r; aspf=s; rf=afrf; sp=none
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Strict
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
DKIM Selectors
✓ 1 found
dkim._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: dkim
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 a mx a:postoffice.uu.org ~all
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