Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
oldoerp-immobilien.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 13:42:09 UTC · ↺ Refresh
MX Hostnames
- mx04.secure-mailgate.com
- mx03.secure-mailgate.com
MX Priorities
- mx03.secure-mailgate.com: 10
- mx04.secure-mailgate.com: 20
A / AAAA Records
- 185.137.168.149 ↩ host203.checkdomain.de
Mail Server IPs
- 46.243.88.176 ↩ node04.secure-mailgate.com
- 46.243.88.174 ↩ node03.secure-mailgate.com
- 46.243.88.175 ↩ node03.secure-mailgate.com
- 46.243.88.177 ↩ node04.secure-mailgate.com
SOA Record
Raw SOA
ns.checkdomain.de hostmaster.checkdomain.de 2026011101 40000 7200 604800 300
Primary NS (mname)
ns.checkdomain.de
Admin Email (rname)
hostmaster@checkdomain.de
Serial
2026011101
Refresh
40000s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns.checkdomain.de
ns2.checkdomain.de
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:secure-mailgate.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 include:spf.protection.outlook.com include:secure-mailgate.com -all
- MS=ms45275724
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