grpmack.com

Valid Email Server
Domain Lookup › grpmack.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
grpmack.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-18 05:51:19 UTC · ↺ Refresh

MX Hostnames

  • grpmack-com.mail.protection.outlook.com

MX Priorities

  • grpmack-com.mail.protection.outlook.com: 15

A / AAAA Records

  • 132.226.118.109 (no PTR)

Mail Server IPs

  • 52.101.10.12 ↩ mail-bn1pr21cu00204.inbound.protection.outlook.com
  • 40.93.192.4 ↩ mail-dm2pr04cu00404.inbound.protection.outlook.com
  • 52.101.11.9 ↩ mail-sn1pr02cu00101.inbound.protection.outlook.com
  • 52.101.9.17 (no PTR)
  • 2a01:111:f403:f802:: ↩ mail-byapr05cu00400.inbound.protection.outlook.com
  • 2a01:111:f403:f804::1 ↩ mail-co1pr05cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:f901::1 ↩ mail-bl0pr02cu00601.inbound.protection.outlook.com
  • 2a01:111:f403:f913:: ↩ mail-cy1pr03cu00100.inbound.protection.outlook.com

SOA Record

Raw SOA ns1.mydyndns.org zone-admin.dyndns.com 2011071624 10800 1800 604800 1800
Primary NS (mname)
ns1.mydyndns.org
Admin Email (rname)
zone-admin@dyndns.com
Serial
2011071624
Refresh
10800s
Retry
1800s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

ns4159.dns.dyn.com
ns2147.dns.dyn.com
ns1148.dns.dyn.com
ns3131.dns.dyn.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com ip4:50.225.203.115 ip4:50.225.203.118 -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

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

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

4 records
  • MS=ms49482318
  • SPFv=spf1 include:spf.protection.outlook.com ip4:50.225.203.115 ip4:50.225.203.118 -all
  • rRQuGSFUnLotCudSXuKBsiXdrTYAl5cGRbaVMrDL4Nl2K8Lr0NrK20uL2sjY+FzjcJQWnnkM/GieRRKdrEOdig==
  • google-site-verification=18LoORhcLxlFkK7DTdZFCYJdnxWJdnArfgR5YraQD3A
Full email verification for grpmack.com

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