rag-koeln.de

Valid Email Server
Domain Lookup › rag-koeln.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
rag-koeln.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-20 02:25:28 UTC · ↺ Refresh

MX Hostnames

  • ragkoeln-de0i.mail.protection.outlook.com

MX Priorities

  • ragkoeln-de0i.mail.protection.outlook.com: 10

A / AAAA Records

No A/AAAA records found.

Mail Server IPs

  • 52.101.68.18 ↩ mail-db4pr02cu00302.inbound.protection.outlook.com
  • 52.101.73.22 ↩ mail-am7pr05cu00106.inbound.protection.outlook.com
  • 52.101.73.30 ↩ mail-am7pr05cu00306.inbound.protection.outlook.com
  • 52.101.73.153 ↩ mail-as8pr05cu00401.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::e ↩ mail-db8pr02cu00106.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::f ↩ mail-db7pr03cu00507.inbound.protection.outlook.com
  • 2a01:111:f403:ca09:: ↩ mail-am3pr04cu00500.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::e ↩ mail-am7pr05cu00206.inbound.protection.outlook.com

SOA Record

Raw SOA dns11.netcologne.de hostmaster.netcologne.de 2025102903 10800 3600 3600000 3600
Primary NS (mname)
dns11.netcologne.de
Admin Email (rname)
hostmaster@netcologne.de
Serial
2025102903
Refresh
10800s
Retry
3600s
Expire
3600000s
Minimum TTL
3600s

Nameservers (NS)

dns13.netcologne.de
dns12.netcologne.de
dns14.netcologne.de
dns11.netcologne.de

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:ex.rag-koeln.de include:spf.nl2go.com include:spf-de.emailsignatures365.com -all
📊 DNS lookups: 4/10
✓ 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
✓ DKIM properly configured for selector: selector1

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

4 records
  • _lje9x3q7ihikq0gbaer72mrp0pb3hnj
  • SPFv=spf1 include:spf.protection.outlook.com include:ex.rag-koeln.de include:spf.nl2go.com include:spf-de.emailsignatures365.com -all
  • gqvnecdjstal4qun3dl8cu62d9
  • sophos-domain-verification=757baf99fabf86a2c1a34ac9bbf5663dda3c6ca193bf91ad41111ac57baca2f1
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