rgu.de

Valid Email Server
Domain Lookup › rgu.de

Domain Overview

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

Checked via [email protected] · 2026-03-28 21:47:19 UTC · ↺ Refresh

MX Hostnames

  • mail01.rgu.de
  • mail.rgu.de

MX Priorities

  • mail.rgu.de: 10
  • mail01.rgu.de: 20

A / AAAA Records

  • 82.212.222.135 ↩ redirect.iwelt.domains
  • 2a00:cb0:2:5::135 (no PTR)

Mail Server IPs

  • 85.22.180.99 ↩ mail.rgu.de
  • 85.22.180.98 ↩ 85-22-180-98.ip.dokom21.de

SOA Record

Raw SOA dns.iwelt-ag.net domainmaster.iwelt-ag.net 2025101001 43200 3600 2419200 3600
Primary NS (mname)
dns.iwelt-ag.net
Admin Email (rname)
domainmaster@iwelt-ag.net
Serial
2025101001
Refresh
43200s
Retry
3600s
Expire
2419200s
Minimum TTL
3600s

Nameservers (NS)

dns.iwelt-ag.net
dns2.iwelt-ag.net
dns3.iwelt-ag.de

SPF Record

✓ Soft Fail (~all)
v=spf1 a:mail.rgu.de a:mail01.rgu.de ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate 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

1 record
  • SPFv=spf1 a:mail.rgu.de a:mail01.rgu.de ~all
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