Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
tango-rhein-ruhr.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-26 03:33:10 UTC · ↺ Refresh
MX Hostnames
- mail2.mailarena.de
- mail.mailarena.de
MX Priorities
- mail2.mailarena.de: 20
- mail.mailarena.de: 10
A / AAAA Records
- 217.144.143.23 ↩ www3.reetz.it
- 2a02:a00:1001::23 ↩ www3.reetz.it
Mail Server IPs
- 217.144.143.13 ↩ mail2.mailarena.de
- 217.144.143.11 ↩ mail.mailarena.de
SOA Record
Raw SOA
ns.portunity.de hostmaster.portunity.de 1769530679 10800 3600 3600000 360
Primary NS (mname)
ns.portunity.de
Admin Email (rname)
hostmaster@portunity.de
Serial
1769530679
Refresh
10800s
Retry
3600s
Expire
3600000s
Minimum TTL
360s
Nameservers (NS)
ns.portunity.de
ns2.portunity.de
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:217.144.143.16 ip6:2a02:a00:1001::16 ~all
📊 DNS lookups: 0/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo 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 ip4:217.144.143.16 ip6:2a02:a00:1001::16 ~all
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