gtc.group

Valid Email Server
Domain Lookup › gtc.group

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
gtc.group
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-30 06:25:58 UTC · ↺ Refresh

MX Hostnames

  • gtc-group.mail.protection.outlook.com

MX Priorities

  • gtc-group.mail.protection.outlook.com: 0

A / AAAA Records

  • 172.67.152.216 (no PTR)
  • 104.21.40.142 (no PTR)
  • 2606:4700:3034::ac43:98d8
  • 2606:4700:3035::6815:288e

Mail Server IPs

  • 52.101.42.16 ↩ mail-co1pr05cu00300.inbound.protection.outlook.com
  • 52.101.11.2 ↩ mail-sn1pr03cu00102.inbound.protection.outlook.com
  • 52.101.9.24 ↩ mail-bl2pr02cu00400.inbound.protection.outlook.com
  • 52.101.41.183 ↩ mail-byapr04cu00307.inbound.protection.outlook.com
  • 2a01:111:f403:f804::1 ↩ mail-co1pr05cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:c902::1 ↩ mail-sj2pr05cu00401.inbound.protection.outlook.com
  • 2a01:111:f403:f804::3 ↩ mail-co1pr03cu00403.inbound.protection.outlook.com
  • 2a01:111:f403:c902::14 ↩ mail-byapr04cu00204.inbound.protection.outlook.com

SOA Record

Raw SOA lennox.ns.cloudflare.com dns.cloudflare.com 2398301423 10000 2400 604800 1800
Primary NS (mname)
lennox.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398301423
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

lennox.ns.cloudflare.com
mira.ns.cloudflare.com

SPF Record

✓ Soft Fail (~all)
v=spf1 a mx include:spf.celeratec.com include:mailgun.org include:spf.protection.outlook.com ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

2 records
  • SPFv=spf1 a mx include:spf.celeratec.com include:mailgun.org include:spf.protection.outlook.com ~all
  • MS=ms74091633
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