rk-online.de

Valid Email Server
Domain Lookup › rk-online.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
rk-online.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-31 20:12:35 UTC · ↺ Refresh

MX Hostnames

  • mxpw1.pm-ag.net
  • mxpm1.pm-ag.net
  • mxpm2.pm-ag.net

MX Priorities

  • mxpm2.pm-ag.net: 8
  • mxpw1.pm-ag.net: 200
  • mxpm1.pm-ag.net: 5

A / AAAA Records

  • 89.31.143.90 (no PTR)

Mail Server IPs

  • 80.155.178.92 ↩ mxpm2.pm-ag.net
  • 80.149.241.108 ↩ mxpw1.pm-ag.net
  • 80.149.241.107 ↩ mxpm1.pm-ag.net

SOA Record

Raw SOA ns.udag.de hostmaster.united-domains.de 2024052511 10800 3600 604800 3600
Primary NS (mname)
ns.udag.de
Admin Email (rname)
hostmaster@united-domains.de
Serial
2024052511
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns.udag.net
ns.udag.de
ns.udag.org

SPF Record

✓ Strict (-all)
v=spf1 mx ip4:87.245.4.120/29 ip4:90.153.17.144/28 ip4:185.166.23.51/32 ip4:37.202.1.53/32 ip4:80.149.241.80/32 include:_spf.cmail.ondemand.com include:spf.protection.outlook.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)

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

3 records
  • SPFv=spf1 mx ip4:87.245.4.120/29 ip4:90.153.17.144/28 ip4:185.166.23.51/32 ip4:37.202.1.53/32 ip4:80.149.241.80/32 include:_spf.cmail.ondemand.com include:spf.protection.outlook.com -all
  • swisssign-check=F5zJktTJdqjyD8AR_OLMYnBE3xc
  • MS=ms80274371
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