a-zcorp.com

Valid Email Server
Domain Lookup › a-zcorp.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
a-zcorp.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-18 20:20:57 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

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

A / AAAA Records

  • 104.20.43.24 (no PTR)
  • 172.66.174.52 (no PTR)
  • 2606:4700:10::ac42:ae34 (no PTR)
  • 2606:4700:10::6814:2b18 (no PTR)

Mail Server IPs

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

SOA Record

Raw SOA ainsley.ns.cloudflare.com dns.cloudflare.com 2398906236 10000 2400 604800 1800
Primary NS (mname)
ainsley.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398906236
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

sonny.ns.cloudflare.com
ainsley.ns.cloudflare.com

SPF Record

✓ Strict (-all)
v=spf1 include:us._netblocks.mimecast.com include:spf.constantcontact.com include:_spf.salesforce.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; rua=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

8 records
  • Y2lhbmJybw==
  • cisco-ci-domain-verification=52465c9ad0e4841c665e81cfec7a3de4d7e88d36c288f87230a0b0e6407a561b
  • docusign=993eaf26-7d55-47d8-a471-af82a30e842f
  • knowbe4-site-verification=ffc1b6bcafc1809dcc90fec751abb5f8
  • ppe-f6042408cafdb6fb664a
  • SPFv=spf1 include:us._netblocks.mimecast.com include:spf.constantcontact.com include:_spf.salesforce.com -all
  • 0ed1fe018abbc7a52567a64c0887af3b0fec6431c4
  • Ms=ms32692747
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