tfaadmin.com

Valid Email Server
Domain Lookup › tfaadmin.com

Domain Overview

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

Checked via [email protected] · 2026-03-17 18:58:56 UTC · ↺ Refresh

Add email validation to your forms — free

Add our free script to block 10,000+ disposable domains + perform other checks. No signup, unlimited checks.

MX validation Disposable detection Role accounts
Add to your signup form
<script src="https://check.verifyswift.com/"></script>
One line · No registration · See full docs & demo → · Customize →

MX Hostnames

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

MX Priorities

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

A / AAAA Records

  • 23.236.62.147 ↩ 147.62.236.23.bc.googleusercontent.com

Mail Server IPs

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

SOA Record

Raw SOA cris.ns.cloudflare.com dns.cloudflare.com 2398717181 10000 2400 604800 1800
Primary NS (mname)
cris.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398717181
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

cris.ns.cloudflare.com
elma.ns.cloudflare.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.spamhero.com include:servers.mcsv.net include:spf.symbiosystems.com include:us._netblocks.mimecast.com ip4:198.217.114.249 -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; pct=100; rua=mailto:[email protected]; sp=none; aspf=r;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none

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:spf.spamhero.com include:servers.mcsv.net include:spf.symbiosystems.com include:us._netblocks.mimecast.com ip4:198.217.114.249 -all
  • 0ed1fe018acb499416ded14ab286e1cfb59d052e3b
  • google-site-verification=hxa4K-t4KNtiJAZeaqXlA1xtNN7fsm3jZEpW9J0jQSI
Free · No signup required
Add email validation to your forms

Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.

<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site · Customize →
See demo & docs
Deep verification
Full email verification for tfaadmin.com

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits