gdtr.com

Valid Email Server
Domain Lookup › gdtr.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
gdtr.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-23 01:06:45 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

  • 141.193.213.10 (no PTR)
  • 141.193.213.11 (no PTR)

Mail Server IPs

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

SOA Record

Raw SOA ns69.worldnic.com namehost.worldnic.com 125121216 10800 3600 604800 3600
Primary NS (mname)
ns69.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
125121216
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns69.worldnic.com
ns70.worldnic.com

SPF Record

✓ Strict (-all)
v=spf1 ip4:134.209.168.100 include:us._netblocks.mimecast.com ip4:173.249.72.150 include:_spf.psm.knowbe4.com include:spf.arcoro.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1;
~ 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
  • o0gslpc6np0l4grf3jh9nd10ov
  • SPFv=spf1 ip4:134.209.168.100 include:us._netblocks.mimecast.com ip4:173.249.72.150 include:_spf.psm.knowbe4.com include:spf.arcoro.com -all
  • rk236m72ubh87ptdel6hgkt9o8
  • utdd0uenbn0mbkobp124ofpohc
  • 3EP7532VUNYS7JYBTDWJ89Q6X98F9BAY
  • osoruhd9g6ik18af8mkjcv5fr2
  • 0ed1fe018a2c5d7beb9516420592c862aafebd715a
  • 74b2db3d2993d61ad5f89716f2b2caa428d926bb56082ee20eaa2ef2ada258fe
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