mtiinstruments.com

Valid Email Server
Domain Lookup › mtiinstruments.com

Domain Overview

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

Checked via [email protected] · 2026-03-25 12:44:27 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

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

A / AAAA Records

  • 172.67.213.254 (no PTR)
  • 104.21.93.186 (no PTR)
  • 2606:4700:3030::ac43:d5fe (no PTR)
  • 2606:4700:3036::6815:5dba (no PTR)

Mail Server IPs

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

SOA Record

Raw SOA john.ns.cloudflare.com dns.cloudflare.com 2396865169 10000 2400 604800 1800
Primary NS (mname)
john.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2396865169
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

marlowe.ns.cloudflare.com
john.ns.cloudflare.com

SPF Record

✓ Strict (-all)
v=spf1 include:us._netblocks.mimecast.com +ip4:72.52.133.177 -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; fo=1; rua=mailto:[email protected]; ruf= mailto:[email protected]; rf=afrf; pct=100
⚠ 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

6 records
  • ca3-fb9feb256aa9484a85223f43ef12716a
  • google-site-verification=H9LwvQWTpq_jyFO2ZR2hKgqZ2wsicfYaAjYQcjj_ta4
  • google-site-verification=N4cPBVCmAsfdQHgtxHmUiBgjTc_fiD9t1VXnNfB2b7U
  • nc304gud8udbmgKNDxfZhdE2trLAp1Ogihdd6wUBzYlJhMtfnCFF04styN0AAhmy3rU+oyMVcK/kRSwefsFSWA==
  • SPFv=spf1 include:us._netblocks.mimecast.com +ip4:72.52.133.177 -all
  • MS=ms95488097
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