Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
f1rst.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-29 14:07:03 UTC · ↺ Refresh
MX Hostnames
- mail.f1rst.de
MX Priorities
- mail.f1rst.de: 10
A / AAAA Records
- 82.223.19.219 ↩ mail.n7server.de
Mail Server IPs
- 82.223.19.219 ↩ mail.n7server.de
SOA Record
Raw SOA
a.ns14.net do-not-reply.f1rst.de 2025061901 43200 7200 1209600 86400
Primary NS (mname)
a.ns14.net
Admin Email (rname)
do-not-reply@f1rst.de
Serial
2025061901
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
d.ns14.net
a.ns14.net
c.ns14.net
b.ns14.net
SPF Record
✓ Strict (-all)
v=spf1 a -all
📊 DNS lookups: 1/10
✓ 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: 216 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
1 record- SPFv=spf1 a -all
Full email verification for f1rst.de
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