Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
networx-online.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-31 16:28:18 UTC · ↺ Refresh
MX Hostnames
- smx01.udag.de
- smx00.udag.de
MX Priorities
- smx00.udag.de: 10
- smx01.udag.de: 10
A / AAAA Records
- 128.140.78.110 ↩ static.110.78.140.128.clients.your-server.de
- 2a01:4f8:1c1c:c488::1 (no PTR)
Mail Server IPs
- 62.146.106.50 ↩ smx00.udag.de
- 62.146.106.51 ↩ smx01.udag.de
SOA Record
Raw SOA
hydrogen.ns.hetzner.com dns.hetzner.com 2026021200 86400 10800 3600000 3600
Primary NS (mname)
hydrogen.ns.hetzner.com
Admin Email (rname)
dns@hetzner.com
Serial
2026021200
Refresh
86400s
Retry
10800s
Expire
3600000s
Minimum TTL
3600s
Nameservers (NS)
oxygen.ns.hetzner.com
helium.ns.hetzner.de
hydrogen.ns.hetzner.com
SPF Record
✓ Strict (-all)
v=spf1 include:_smtp.udag.de ip4:128.140.78.110 ip4:116.203.39.47 -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1;p=reject;sp=reject;pct=100;adkim=r;aspf=s;rua=mailto:[email protected];ruf=mailto:[email protected];fo=1
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 1 found
s1._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 include:_smtp.udag.de ip4:128.140.78.110 ip4:116.203.39.47 -all
- google-site-verification=lngvV28xsJC5WZxYqhkZY_V6TOtvmh_B82uvVkZUivU
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