Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
dereff.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-29 05:56:42 UTC · ↺ Refresh
MX Hostnames
- dereff.de
MX Priorities
- dereff.de: 100
A / AAAA Records
- 78.46.248.192 ↩ core.deryo.de
- 2a01:4f8:c17:1dac::2 ↩ core.deryo.de
Mail Server IPs
- 78.46.248.192 ↩ core.deryo.de
- 2a01:4f8:c17:1dac::2 ↩ core.deryo.de
SOA Record
Raw SOA
ns81.domaincontrol.com dns.jomax.net 2020090704 28800 7200 604800 600
Primary NS (mname)
ns81.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2020090704
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns82.domaincontrol.com
ns81.domaincontrol.com
SPF Record
✓ Strict (-all)
v=spf1 mx a ip4:78.46.248.192 -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 13 found
google._domainkey
selector1._domainkey
selector2._domainkey
default._domainkey
mail._domainkey
dkim._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
zoho._domainkey
sendgrid._domainkey
mxvault._domainkey
amazonses._domainkey
⚠ Public key (p=) missing in DKIM record for selector google.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 mx a ip4:78.46.248.192 -all
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