Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
ostermeier-on.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-25 09:44:30 UTC · ↺ Refresh
MX Hostnames
- mail.ostermeier-on.de
MX Priorities
- mail.ostermeier-on.de: 10
A / AAAA Records
- 116.203.195.120 ↩ server01.toco-host.de
Mail Server IPs
- 116.203.195.120 ↩ server01.toco-host.de
SOA Record
Raw SOA
ns3.toco-host.de christian.ostermeier-on.de 2026013001 10800 3600 1209600 10800
Primary NS (mname)
ns3.toco-host.de
Admin Email (rname)
christian@ostermeier-on.de
Serial
2026013001
Refresh
10800s
Retry
3600s
Expire
1209600s
Minimum TTL
10800s
Nameservers (NS)
ns3.toco-host.de
ns4.toco-host.de
SPF Record
✓ Strict (-all)
v=spf1 +a +mx -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; adkim=s; aspf=s
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)
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
- SPFv=spf1 ip4:116.203.195.120 ~all
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