colonialwebb.com

Valid Email Server
Domain Lookup › colonialwebb.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
colonialwebb.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-18 20:47:15 UTC · ↺ Refresh

MX Hostnames

  • us-smtp-inbound-1.mimecast.com
  • us-smtp-inbound-2.mimecast.com

MX Priorities

  • us-smtp-inbound-2.mimecast.com: 10
  • us-smtp-inbound-1.mimecast.com: 10

A / AAAA Records

  • 108.167.181.138 ↩ bigdlaw.com

Mail Server IPs

  • 170.10.132.141 ↩ us-smtp-inbound-1.mimecast.com
  • 170.10.128.141 ↩ us-smtp-inbound-1.mimecast.com
  • 170.10.128.221 ↩ us-smtp-inbound-2.mimecast.com
  • 170.10.132.221 ↩ us-smtp-inbound-1.mimecast.com
  • 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
  • 170.10.128.242 ↩ us-smtp-inbound-1.mimecast.com

SOA Record

Raw SOA ns1-01.azure-dns.com hostmaster.dns.loc 50 900 600 86400 3600
Primary NS (mname)
ns1-01.azure-dns.com
Admin Email (rname)
hostmaster@dns.loc
Serial
50
Refresh
900s
Retry
600s
Expire
86400s
Minimum TTL
3600s

Nameservers (NS)

ns3-01.azure-dns.org
ns4-01.azure-dns.info
ns1-01.azure-dns.com
ns2-01.azure-dns.net

SPF Record

✓ Strict (-all)
v=spf1 mx:comfortsystemsusa-com.mail.protection.outlook.com ip4:162.242.134.119 ip4:192.254.121.157 ip4:3.213.125.144 ip4:216.81.154.183 ip4:168.245.2.69 include:spf2.comfortsystemsusa.com include:spf_all.comfortsystemsusa.com -all
📊 DNS lookups: 3/10
✓ 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

11 records
  • openai-domain-verification=dv-5zFIY4qKI5TgYVG9a1B5Jc7k
  • smartsheet-site-validation=Gdk0rNAnJm80NHLztTgN0mYM641AX6iz
  • e3me79875sjd2n82bei59db45
  • iildsv0boa4i8fbj26k583qijo
  • google-site-verification=kqkCl723GSlMzmPaIBVeoN4BBJhS8O1edx_vIsutMUs
  • MS=ms58828512
  • SPFv=spf1 mx:comfortsystemsusa-com.mail.protection.outlook.com ip4:162.242.134.119 ip4:192.254.121.157 ip4:3.213.125.144 ip4:216.81.154.183 ip4:168.245.2.69 include:spf2.comfortsystemsusa.com include:spf_all.comfortsystemsusa.com -all
  • lc183h67ii7ujs64d9j27ei7qh
  • lrcvmhjtece8ra7t2m78b1iqrn
  • bpo95okn4q3ge6mn9v2as1b2qj
  • kvs6v6781lhp885en3ge419d7g
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