Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
3towers.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-03 05:57:54 UTC · ↺ Refresh
MX Hostnames
- helheim.3towers.de
MX Priorities
- helheim.3towers.de: 10
A / AAAA Records
- 46.38.233.23 ↩ helheim.3towers.de
- 2a03:4000:2:27c::100 ↩ helheim.3towers.de
Mail Server IPs
- 46.38.233.23 ↩ helheim.3towers.de
- 2a03:4000:2:27c::100 ↩ helheim.3towers.de
SOA Record
Raw SOA
ns.3towers.de hostmaster.3towers.de 2026040200 7200 1800 604800 3600
Primary NS (mname)
ns.3towers.de
Admin Email (rname)
hostmaster@3towers.de
Serial
2026040200
Refresh
7200s
Retry
1800s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns.3towers.de
ns2.core-networks.eu
ns1.core-networks.de
ns3.core-networks.com
SPF Record
✓ Strict (-all)
v=spf1 mx -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; adkim=s; aspf=s; fo=1
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
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
2 records- SPFv=spf1 mx -all
- google-site-verification=SCJ_WhEVqNNUY5IU0qvQdF3Q5vonq3Rz7hMJf8FrIpA
Full email verification for 3towers.de
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits