stadt-koeln.de

Valid Email Server
Domain Lookup › stadt-koeln.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
stadt-koeln.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-18 04:03:39 UTC · ↺ Refresh

MX Hostnames

  • mail2.stadt-koeln.de
  • mail1.stadt-koeln.de

MX Priorities

  • mail2.stadt-koeln.de: 10
  • mail1.stadt-koeln.de: 10

A / AAAA Records

  • 87.79.15.140 ↩ www.stadt-koeln.de
  • 2001:4dd0:100:1f00:80::221:1 ↩ www.stadt-koeln.de

Mail Server IPs

  • 194.8.223.25 ↩ mail2.stadt-koeln.de
  • 194.8.223.24 ↩ mail1.stadt-koeln.de

SOA Record

Raw SOA anycast.regdns1.de hostmaster.netcologne.de 2026022002 10800 3600 3600000 3600
Primary NS (mname)
anycast.regdns1.de
Admin Email (rname)
hostmaster@netcologne.de
Serial
2026022002
Refresh
10800s
Retry
3600s
Expire
3600000s
Minimum TTL
3600s

Nameservers (NS)

anycast.regdns2.net
anycast.regdns1.de

SPF Record

✓ Strict (-all)
v=spf1 mx a:otc-de-spf.mms.t-systems-service.com ip4:91.151.20.22 include:ekom21.de include:successfactors.eu -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1;p=quarantine;sp=quarantine;pct=100;rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: quarantine

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

2 records
  • successfactors-site-verification=NTIxYzA0NTQ2NTlkY2U0YzJlMjI4ZDIxY2JkYTNhNTBjM2Q5N2Y3YWE5MDcxOGMxODRhZWVhYjJhNjIzYjg3ZQ==
  • SPFv=spf1 mx a:otc-de-spf.mms.t-systems-service.com ip4:91.151.20.22 include:ekom21.de include:successfactors.eu -all
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