Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
juursema.nl
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-14 01:53:05 UTC · ↺ Refresh
MX Hostnames
- mx.runbox.com
MX Priorities
- mx.runbox.com: 10
A / AAAA Records
- 23.21.234.173 ↩ ec2-23-21-234-173.compute-1.amazonaws.com
- 23.21.157.88 ↩ ec2-23-21-157-88.compute-1.amazonaws.com
Mail Server IPs
- 185.226.149.25 ↩ aibo.runbox.com
SOA Record
Raw SOA
ns0.transip.net hostmaster.transip.nl 2025090803 86400 1800 2419200 300
Primary NS (mname)
ns0.transip.net
Admin Email (rname)
hostmaster@transip.nl
Serial
2025090803
Refresh
86400s
Retry
1800s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns0.transip.net
ns1.transip.nl
ns2.transip.eu
SPF Record
✓ Strict (-all)
v=spf1 include:spf.runbox.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- DMARCv=DMARC1; p=none; rua=mailto:[email protected]; fo=1
- SPFv=spf1 include:spf.runbox.com -all
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