horntools.com

Valid Email Server

Domain Overview

DNS: ✓ just now Checker: ✓ just now
horntools.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-09-04 18:40:56 UTC · ↺ Refresh

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MX Hostnames

  • horntools-com.mail.protection.outlook.com

MX Priorities

  • horntools-com.mail.protection.outlook.com: 10

A / AAAA Records

  • 23.227.38.65 ↩ myshopify.com

Mail Server IPs

  • 52.101.68.16 ↩ mail-db4pr02cu00400.inbound.protection.outlook.com
  • 52.101.68.32 ↩ mail-db3pr0202cu00200.inbound.protection.outlook.com
  • 52.101.68.5 ↩ mail-du2pr03cu00105.inbound.protection.outlook.com
  • 52.101.73.145 ↩ mail-am6pr02cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::9 ↩ mail-db7pr03cu00601.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::7 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::5 ↩ mail-am1pr04cu00105.inbound.protection.outlook.com
  • 2a01:111:f403:ca38::8 ↩ mail-wa4pr04cu00100.inbound.protection.outlook.com

SOA Record

Raw SOA ns.udag.de hostmaster.united-domains.de 2024031830 10800 3600 604800 3600
Primary NS (mname)
ns.udag.de
Admin Email (rname)
hostmaster@united-domains.de
Serial
2024031830
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns.udag.de
ns.udag.net
ns.udag.org

SPF Record

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

DMARC Record

~ Quarantine
v=DMARC1;p=quarantine;pct=100;ruf=mailto:[email protected];adkim=s;aspf=r
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)

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.protection.outlook.com -all
  • pinterest-site-verification=7268a54760e7357c5e93e1de8d4d5f76
  • klaviyo-site-verification=RYrymn
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