rtc-koeln.de

Valid Email Server
Domain Lookup › rtc-koeln.de

Domain Overview

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

Checked via [email protected] · 2026-04-04 20:24:09 UTC · ↺ Refresh

MX Hostnames

  • mx3.mail.ovh.net
  • mx2.mail.ovh.net
  • mx1.mail.ovh.net

MX Priorities

  • mx1.mail.ovh.net: 1
  • mx2.mail.ovh.net: 5
  • mx3.mail.ovh.net: 100

A / AAAA Records

  • 151.80.4.219 ↩ cluster031.hosting.ovh.net
  • 2001:41d0:301:1::31 (no PTR)

Mail Server IPs

  • 188.165.36.237 ↩ mx1.mail.ovh.net
  • 87.98.160.167 ↩ mx2.mail.ovh.net
  • 91.121.53.175 ↩ mx3.mail.ovh.net

SOA Record

Raw SOA dns103.ovh.net tech.ovh.net 2026032100 43200 3600 2419200 60
Primary NS (mname)
dns103.ovh.net
Admin Email (rname)
tech@ovh.net
Serial
2026032100
Refresh
43200s
Retry
3600s
Expire
2419200s
Minimum TTL
60s

Nameservers (NS)

dns103.ovh.net
ns103.ovh.net

SPF Record

✓ Soft Fail (~all)
v=spf1 include:mx.ovh.com ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

~ Quarantine
v=DMARC1;p=quarantine;pct=100;rua=mailto:[email protected];sp=quarantine;aspf=r;
~ 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

5 records
  • 1|www.rtc-koeln.de
  • t|RTC-K195182ln
  • SPFv=spf1 include:mx.ovh.com ~all
  • google-site-verification=s8vex1Dt9yZE7ErMcExsYK4iH-QGp515QHPf5ZvEhD8
  • facebook-domain-verification=i3sqmz3eii3uqq5tfn3ymqzy6ut247
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