swb4u.de

Valid Email Server
Domain Lookup › swb4u.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
swb4u.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-22 11:08:17 UTC · ↺ Refresh

MX Hostnames

  • swb4u-de.mail.protection.outlook.com

MX Priorities

  • swb4u-de.mail.protection.outlook.com: 0

A / AAAA Records

  • 88.198.107.213 ↩ redirector.blatten.net

Mail Server IPs

  • 52.101.73.11 ↩ mail-am1pr04cu00103.inbound.protection.outlook.com
  • 52.101.68.29 ↩ mail-dbapr03cu00105.inbound.protection.outlook.com
  • 52.101.68.15 ↩ mail-db6pr03cu00107.inbound.protection.outlook.com
  • 52.101.73.24 ↩ mail-as8pr05cu00300.inbound.protection.outlook.com
  • 2a01:111:f403:ca09:: ↩ mail-am3pr04cu00500.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::7 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::9 ↩ mail-db7pr03cu00601.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::4 ↩ mail-am0pr04cu00504.inbound.protection.outlook.com

SOA Record

Raw SOA ns1.blatten.com hostmaster.blatten.com 2024010201 7200 540 604800 86400
Primary NS (mname)
ns1.blatten.com
Admin Email (rname)
hostmaster@blatten.com
Serial
2024010201
Refresh
7200s
Retry
540s
Expire
604800s
Minimum TTL
86400s

Nameservers (NS)

ns1.blatten.com
ns2.blatten.com
ns3.blatten.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -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

✓ 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
  • MS=ms43732063
  • SPFv=spf1 include:spf.protection.outlook.com -all
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