stadtwerkekoeln.de

Valid Email Server
Domain Lookup › stadtwerkekoeln.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
stadtwerkekoeln.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-22 06:43:09 UTC · ↺ Refresh

MX Hostnames

  • smtpp-11.rheinenergie.com
  • smtpp-21.rheinenergie.com

MX Priorities

  • smtpp-21.rheinenergie.com: 10
  • smtpp-11.rheinenergie.com: 10

A / AAAA Records

  • 198.202.211.1 (no PTR)

Mail Server IPs

  • 195.245.65.146 ↩ smtpp-21.rheinenergie.com
  • 195.245.65.145 ↩ smtpp-11.rheinenergie.com

SOA Record

Raw SOA ns1.rheinenergie.com root.ns1.rheinenergie.com 147 10800 3600 2592000 900
Primary NS (mname)
ns1.rheinenergie.com
Admin Email (rname)
root@ns1.rheinenergie.com
Serial
147
Refresh
10800s
Retry
3600s
Expire
2592000s
Minimum TTL
900s

Nameservers (NS)

ns3.rheinenergie.com
ns1.rheinenergie.com

SPF Record

✓ Strict (-all)
v=spf1 a mx ip4:195.245.65.145 ip4:195.245.65.146 ip4:195.245.64.80 ip4:195.245.64.81 include:spf.protection.outlook.com include:spf.datasec.de a:mx03.haubnerdc.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

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

6 records
  • _telesec-domain-validation=6AD09081D2A5CC2CE75AB75A78BB89D1EC7A1723ABE29BF9E331F3C68E897B39
  • r4pt59ahbk0b6qn71snni8hoqu
  • 8kcn7an277s4m2aq81475mk854
  • SPFv=spf1 a mx ip4:195.245.65.145 ip4:195.245.65.146 ip4:195.245.64.80 ip4:195.245.64.81 include:spf.protection.outlook.com include:spf.datasec.de a:mx03.haubnerdc.com -all
  • hZ38p0Z4ywP1lUkcZQhcKfsAFzOZ+VuqyvtbSVt9mao4mSNEisnnN6+vAvTR5M4VyjYsPpab0THuLmHRn409hQ==
  • MS=ms67305638
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