3er.de

Valid Email Server
Domain Lookup › 3er.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
3er.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-21 06:22:55 UTC · ↺ Refresh

MX Hostnames

  • 3er-de.mail.protection.outlook.com
  • mx04.secure-mailgate.com
  • mx03.secure-mailgate.com

MX Priorities

  • mx03.secure-mailgate.com: 10
  • mx04.secure-mailgate.com: 10
  • 3er-de.mail.protection.outlook.com: 30

A / AAAA Records

  • 49.13.13.229

Mail Server IPs

  • 46.243.88.176 ↩ node04.secure-mailgate.com
  • 46.243.88.174 ↩ node03.secure-mailgate.com
  • 46.243.88.177 ↩ node04.secure-mailgate.com
  • 46.243.88.175 ↩ node03.secure-mailgate.com
  • 52.101.73.12 ↩ mail-am4pr0401cu00104.inbound.protection.outlook.com
  • 52.101.68.39 ↩ mail-db7pr03cu00607.inbound.protection.outlook.com
  • 52.101.68.27 ↩ mail-db7pr03cu00503.inbound.protection.outlook.com
  • 52.101.73.153 ↩ mail-as8pr05cu00401.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::7 ↩ mail-db4pr02cu00307.inbound.protection.outlook.com
  • 2a01:111:f403:ca09:: ↩ mail-am3pr04cu00500.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::e
  • 2a01:111:f403:ca04::1

SOA Record

Raw SOA ns5.kasserver.com hostmaster.kasserver.com 2602251021 28800 7200 1209600 7200
Primary NS (mname)
ns5.kasserver.com
Admin Email (rname)
hostmaster@kasserver.com
Serial
2602251021
Refresh
28800s
Retry
7200s
Expire
1209600s
Minimum TTL
7200s

Nameservers (NS)

ns5.kasserver.com
ns6.kasserver.com

SPF Record

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

DMARC Record

✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ 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
  • google-site-verification=pjutwl0F1EqkRQ1AdZu1BhPxKHV45Pz6tVVrFB6_Yko
  • MS=ms13534177
  • SPFv=spf1 include:spf.protection.outlook.com -all
Full email verification for 3er.de

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