Domain Overview
DNS: ✓ 20d ago
Checker: ✓ 20d ago
optico.nl
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-05-20 22:12:28 UTC · ↺ Refresh
MX Hostnames
- mail.optico.nl
MX Priorities
- mail.optico.nl: 10
A / AAAA Records
- 18.193.147.120 ↩ ec2-18-193-147-120.eu-central-1.compute.amazonaws.com
Mail Server IPs
- 18.193.147.120 ↩ ec2-18-193-147-120.eu-central-1.compute.amazonaws.com
SOA Record
Raw SOA
ns1.esm-ici.nl hostmaster.optico.nl 2026050600 3600 3600 1209600 86400
Primary NS (mname)
ns1.esm-ici.nl
Admin Email (rname)
hostmaster@optico.nl
Serial
2026050600
Refresh
3600s
Retry
3600s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns1.esm-ici.nl
ns2.esm-ici.nl
SPF Record
✓ Soft Fail (~all)
v=spf1 a mx ip4:10.30.1.10 include:relay.mailchannels.net ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate 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
1 record- SPFv=spf1 a mx ip4:10.30.1.10 include:relay.mailchannels.net ~all
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