columbusltach.org

Valid Email Server
Domain Lookup › columbusltach.org

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
columbusltach.org
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-19 09:05:30 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

  • us-smtp-inbound-1.mimecast.com: 5
  • us-smtp-inbound-2.mimecast.com: 5

A / AAAA Records

  • 107.180.113.42 ↩ 42.113.180.107.host.secureserver.net

Mail Server IPs

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

SOA Record

Raw SOA ns17.domaincontrol.com dns.jomax.net 2025090900 28800 7200 604800 600
Primary NS (mname)
ns17.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2025090900
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

ns17.domaincontrol.com
ns18.domaincontrol.com

SPF Record

✓ Strict (-all)
v=spf1 include:_netblocks.mimecast.com ip4:40.84.22.152 ip4:52.167.226.94 ip4:52.184.143.136 -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; pct=100; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 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

3 records
  • SPFv=spf1 include:_netblocks.mimecast.com ip4:40.84.22.152 ip4:52.167.226.94 ip4:52.184.143.136 -all
  • MS=ms31752235
  • b3sfu1WxhIyF7mZEuKH0bDDzU0BMKlaFebtLPdhjhoFzHGhjtcvftbptmE6Qvfnqb7ohoSm1+48Aeb784AUn1w==
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