Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
deltaheat.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-25 06:04:29 UTC · ↺ Refresh
MX Hostnames
- mail.berlinsms.de
MX Priorities
- mail.berlinsms.de: 10
A / AAAA Records
- 144.76.115.180 ↩ mail.berlinsms.de
Mail Server IPs
- 144.76.115.180 ↩ mail.berlinsms.de
SOA Record
Raw SOA
ns1.first-ns.de dns.hetzner.com 2026030200 8640 1080 360000 8640
Primary NS (mname)
ns1.first-ns.de
Admin Email (rname)
dns@hetzner.com
Serial
2026030200
Refresh
8640s
Retry
1080s
Expire
360000s
Minimum TTL
8640s
Nameservers (NS)
robotns2.second-ns.de
robotns3.second-ns.com
ns1.first-ns.de
SPF Record
✓ Strict (-all)
v=spf1 a mx -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 a mx -all
- DMARCv=DMARC1; p=none; rua=mailto:[email protected]; [email protected]; rf=afrf; sp=none; fo=0:1:d:s; ri=86400; adkim=r; aspf=r
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