flex-box.com

Valid Email Server
Domain Lookup › flex-box.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
flex-box.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-01 05:13:51 UTC · ↺ Refresh

MX Hostnames

  • fbmail.flex-box.com
  • fbserver.flex-box.com

MX Priorities

  • fbmail.flex-box.com: 20
  • fbserver.flex-box.com: 10

A / AAAA Records

  • 185.151.30.224 ↩ 185-151-30-224.ptr4.stackcp.net

Mail Server IPs

  • 210.177.143.203 ↩ fbmail.flex-box.com
  • 210.177.143.205 ↩ fbserver.flex-box.com

SOA Record

Raw SOA ns31.worldnic.com namehost.worldnic.com 125021006 10800 3600 604800 3600
Primary NS (mname)
ns31.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
125021006
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns31.worldnic.com
ns32.worldnic.com

SPF Record

✓ Soft Fail (~all)
v=spf1 mx ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate 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

3 records
  • MS=ms83732353
  • SPFv=spf1 mx ~all
  • google-site-verification=U8EdxcJnjjkaoDT1JkphXFw5JmTmt7XOcs0_XAK45os
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