rundf.de

Valid Email Server
Domain Lookup › rundf.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
rundf.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-01 19:21:16 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

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

A / AAAA Records

  • 213.133.121.43 ↩ dedi3293.your-server.de

Mail Server IPs

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

SOA Record

Raw SOA ns1.namesecure.de hostmaster.namesecure.de 2017021400 14400 7200 604800 28800
Primary NS (mname)
ns1.namesecure.de
Admin Email (rname)
hostmaster@namesecure.de
Serial
2017021400
Refresh
14400s
Retry
7200s
Expire
604800s
Minimum TTL
28800s

Nameservers (NS)

ns1.namesecure.de
ns2.namesecure.de

SPF Record

✓ Strict (-all)
v=spf1 a mx ip4:87.128.105.53 ip4:213.23.243.22 include:spf.protection.outlook.com -all
📊 DNS lookups: 3/10
✓ 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=ms67979772
  • SPFv=spf1 a mx ip4:87.128.105.53 ip4:213.23.243.22 include:spf.protection.outlook.com -all
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