Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
guelzau-bau.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-22 08:02:11 UTC · ↺ Refresh
MX Hostnames
- mail.guelzau-bau.de
- s1.wfx.de
MX Priorities
- mail.guelzau-bau.de: 10
- s1.wfx.de: 100
A / AAAA Records
- 85.10.227.61 ↩ s1.wfx.de
Mail Server IPs
- 85.10.227.61 ↩ s1.wfx.de
- 2a01:4f8:a0:61f6::2 ↩ s1.wfx.de
SOA Record
Raw SOA
ns1-tec.de webmaster.guelzau-bau.de 2026021801 86400 3600 2592000 900
Primary NS (mname)
ns1-tec.de
Admin Email (rname)
webmaster@guelzau-bau.de
Serial
2026021801
Refresh
86400s
Retry
3600s
Expire
2592000s
Minimum TTL
900s
Nameservers (NS)
ns2-tec.de
ns1-tec.de
SPF Record
✓ Soft Fail (~all)
v=spf1 a mx ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate 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
1 record- SPFv=spf1 a mx ~all
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