rubinbrown.com

Valid Email Server
Domain Lookup › rubinbrown.com

Domain Overview

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

Checked via [email protected] · 2026-04-01 04:43:19 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

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

A / AAAA Records

  • 192.124.249.18 ↩ cloudproxy10018.sucuri.net
  • 2a02:fe80:1010::18:9 (no PTR)

Mail Server IPs

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

SOA Record

Raw SOA ns97.worldnic.com namehost.worldnic.com 126032411 10800 3600 604800 3600
Primary NS (mname)
ns97.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
126032411
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns97.worldnic.com
ns98.worldnic.com

SPF Record

✓ Soft Fail (~all)
v=spf1 Include:us._netblocks.mimecast.com include:2842018.spf08.hubspotemail.net include:43964264.spf01.hubspotemail.net include:spf.protection.outlook.com include:spf.topdesk.net ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

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

17 records
  • fZpkoZyV8pw4+3KWBwGYZJdS8HHnlDrSH8McdZFoXwp4K0ZQqTQKHrP4w06o5ENa5rw0Y12clPXdtiP8nVZbQQ==
  • 9iqtvi6avq5660q4aq2km5ldfo
  • google-site-verification=AIcOwsaAfZEAqIlBycyQj4yVQ2idVqj5l7G0FP-ES8E
  • MS=ms54677630
  • docusign=81f1fc93-218f-4c50-a650-9730eb72f877
  • atlassian-domain-verification=V5uSjiLK1jLp/80WEi4BkjIVH7x42dXzCVSotxHNkHJehcSGvKGtWoSgaDBFv/6k
  • bu83z4VwEjNDsrZL57cSgX
  • smartsheet-site-validation=ZcqJayrrK5IB4m_Ia4dLmXA2wfrEQcTE
  • intersight=8bd3b6cfb85b889738066585444cfdb2f76387ebfd4e44747aa73bf70b5c7d22
  • A1B52A97DC06DF1A19E50D3C7BAA3CE75E00FFCB
  • ms-domain-verification=1135625b-bc98-4822-bcb1-dfd5b5872cfd
  • 0ed1fe018abfe405453e3c48fd976cf6faabb96392
  • dropbox-domain-verification=a7bmmol4ht65
  • e2ma-verification=od2eb
  • ZOOM_verify_JQwVmjWkQpypmfysh0ac-A
  • docusign=dfe7aa37-4e0b-4ec1-90d4-7db8a1b25a30
  • SPFv=spf1 Include:us._netblocks.mimecast.com include:2842018.spf08.hubspotemail.net include:43964264.spf01.hubspotemail.net include:spf.protection.outlook.com include:spf.topdesk.net ~all
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