Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
central-ronsdorf.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 15:01:19 UTC · ↺ Refresh
MX Hostnames
- smtp-in.portunity.de
- smtp-backup2.portunity.de
- smtp-backup1.portunity.de
MX Priorities
- smtp-backup1.portunity.de: 20
- smtp-in.portunity.de: 10
- smtp-backup2.portunity.de: 30
A / AAAA Records
- 217.144.129.172 ↩ webbusiness2.portunity.de
- 2a02:a00::2:0:4:ebb2 ↩ webbusiness2.portunity.de
Mail Server IPs
- 217.144.128.54 ↩ smtp-backup1.portunity.de
- 2a02:a00::2:0:0:54 ↩ smtp-backup1.portunity.de
- 217.144.128.52 ↩ smtp-in.portunity.de
- 2a02:a00::2:0:0:52 ↩ smtp-in.portunity.de
- 37.120.186.72 ↩ smtp-backup2-2.portunity.de
- 2a03:4000:f:5b9::25 ↩ smtp-backup2-2.portunity.de
SOA Record
Raw SOA
ns.portunity.de hostmaster.portunity.de 1770175934 10800 3600 3600000 360
Primary NS (mname)
ns.portunity.de
Admin Email (rname)
hostmaster@portunity.de
Serial
1770175934
Refresh
10800s
Retry
3600s
Expire
3600000s
Minimum TTL
360s
Nameservers (NS)
ns2.portunity.de
ns.portunity.de
SPF Record
✓ Soft Fail (~all)
v=spf1 include:set1.spf-cust.portunity.de
📊 DNS lookups: 1/10
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 include:set1.spf-cust.portunity.de
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