rumberger.com

Valid Email Server
Domain Lookup › rumberger.com
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
rumberger.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-06-03 11:20:13 UTC · ↺ Refresh

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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

  • 142.93.194.88 (no PTR)

Mail Server IPs

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

SOA Record

Raw SOA auth1.dns.cogentco.com dns.cogentco.com 2025090300 10800 3600 604800 600
Primary NS (mname)
auth1.dns.cogentco.com
Admin Email (rname)
dns@cogentco.com
Serial
2025090300
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

auth1.dns.cogentco.com
auth2.dns.cogentco.com

SPF Record

✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com include:us._netblocks.mimecast.com ip4:38.104.88.138 ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)

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

5 records
  • ZOOM_verify_pyiPyGD7YLL7Rt9caDj6mg
  • google-site-verification=CL84LeSl2jP0eYAM6A3D9ZRyywosSclOUQMe5qSaBKM
  • SPFv=spf1 include:spf.protection.outlook.com include:us._netblocks.mimecast.com ip4:38.104.88.138 ~all
  • MS=ms57668583
  • MS=174655E81E7A487D089FF485056B31F6B1953AB6
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