a3plus.de

Valid Email Server
Domain Lookup › a3plus.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
a3plus.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-20 02:17:06 UTC · ↺ Refresh

MX Hostnames

  • a3plus-de.mail.protection.outlook.com

MX Priorities

  • a3plus-de.mail.protection.outlook.com: 10

A / AAAA Records

  • 45.129.181.134 ↩ www41.iharbeck.de

Mail Server IPs

  • 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
  • 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
  • 52.101.168.0 ↩ mail-beup281cu00100.inbound.protection.outlook.com
  • 52.101.170.2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
  • 2a01:111:f403:ca2d:: ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
  • 2a01:111:f403:ca27:: ↩ mail-beup281cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca2d::1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
  • 2a01:111:f403:ca2d::2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com

SOA Record

Raw SOA ns2.ingoharbeck.de ingo.iharbeck.de 2026022602 28800 7200 604800 86400
Primary NS (mname)
ns2.ingoharbeck.de
Admin Email (rname)
ingo@iharbeck.de
Serial
2026022602
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
86400s

Nameservers (NS)

ns2.ingoharbeck.de
ns1.ingoharbeck.de

SPF Record

✓ Strict (-all)
v=spf1 include:postal.pm-kunden.de include:spf.protection.outlook.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict 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

3 records
  • SPFv=spf1 include:postal.pm-kunden.de include:spf.protection.outlook.com -all
  • DMARCv=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
  • MS=ms56248655
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