Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sg-ferienwohnung.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-30 18:50:31 UTC · ↺ Refresh
MX Hostnames
- mail.error504.de
MX Priorities
- mail.error504.de: 5
A / AAAA Records
- 80.149.177.231 ↩ penang.error504.de
Mail Server IPs
- 212.185.124.147 ↩ mail.error504.de
- 2003:c6:d815:e504:14::2 ↩ mail.error504.de
SOA Record
Raw SOA
ns1.error504.de admin.error504.de 2025102802 7200 540 604800 3600
Primary NS (mname)
ns1.error504.de
Admin Email (rname)
admin@error504.de
Serial
2025102802
Refresh
7200s
Retry
540s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
pns.dtag.de
ns1.error504.de
secondary006.dtag.net
SPF Record
✓ Strict (-all)
v=spf1 mx a ip4:212.185.124.147 ip6:2003:c6:d815:e504:14::2 a:mail.error504.de -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 1 found
mail._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 mx a ip4:212.185.124.147 ip6:2003:c6:d815:e504:14::2 a:mail.error504.de -all
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