Domain Overview
DNS: ✓ 11h ago
Checker: ✓ 11h ago
de-werker.nl
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-20 20:18:35 UTC · ↺ Refresh
MX Hostnames
- mail.de-werker.nl
MX Priorities
- mail.de-werker.nl: 10
A / AAAA Records
- 136.144.199.18 ↩ server1.jdw-servers.nl
Mail Server IPs
- 136.144.199.18 ↩ server1.jdw-servers.nl
SOA Record
Raw SOA
ns1.jdw-webdns.nl hostmaster.de-werker.nl 2026031201 3600 3600 1209600 86400
Primary NS (mname)
ns1.jdw-webdns.nl
Admin Email (rname)
hostmaster@de-werker.nl
Serial
2026031201
Refresh
3600s
Retry
3600s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns1.jdw-webdns.nl
ns2.jdw-webdns.nl
SPF Record
✓ Strict (-all)
v=spf1 a mx ptr ip4:136.144.199.18 a:server1.jdw-servers.nl -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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
1 record- SPFv=spf1 a mx ptr ip4:136.144.199.18 a:server1.jdw-servers.nl -all
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