collyer.biz

Valid Email Server
Domain Lookup › collyer.biz

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
collyer.biz
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-14 05:35:38 UTC · ↺ Refresh

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MX Hostnames

  • collyer-biz.mail.sg.greenradar.com
  • collyer-biz.mail.dr.greenradar.com

MX Priorities

  • collyer-biz.mail.dr.greenradar.com: 20
  • collyer-biz.mail.sg.greenradar.com: 10

A / AAAA Records

  • 116.12.176.166 (no PTR)

Mail Server IPs

  • 152.101.60.164 ↩ sg01extb.greenradar.com
  • 152.101.60.163 ↩ sg01extb.greenradar.com

SOA Record

Raw SOA x.ns.joker.com hostmaster.joker.com 2024042428 14400 3600 1209600 300
Primary NS (mname)
x.ns.joker.com
Admin Email (rname)
hostmaster@joker.com
Serial
2024042428
Refresh
14400s
Retry
3600s
Expire
1209600s
Minimum TTL
300s

Nameservers (NS)

x.ns.joker.com
z.ns.joker.com
y.ns.joker.com

SPF Record

✓ Strict (-all)
v=spf1 mx +a +ip4:116.12.176.164 +ip4:152.101.60.163 +ip4:202.155.238.6 +ip4:203.127.198.249 a:mail.greenit.com.sg include:spf.greenradar.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✗ None detected

No 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
  • MS=FF6BE955D4E8A143EED674EBC41E3872CDBCAD9C
  • SPFv=spf1 mx +a +ip4:116.12.176.164 +ip4:152.101.60.163 +ip4:202.155.238.6 +ip4:203.127.198.249 a:mail.greenit.com.sg include:spf.greenradar.com -all
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