Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
bsz-radolfzell.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-24 21:14:35 UTC · ↺ Refresh
MX Hostnames
- relay.rzone.de
- mail.bsz-radolfzell.de
MX Priorities
- mail.bsz-radolfzell.de: 10
- relay.rzone.de: 100
A / AAAA Records
- 46.4.167.82 ↩ e12.k-k.de
Mail Server IPs
- 91.137.116.135 (no PTR)
- 81.169.145.96 ↩ relay.rzone.de
SOA Record
Raw SOA
docks14.rzone.de hostmaster.strato-rz.de 2023111635 86400 7200 604800 300
Primary NS (mname)
docks14.rzone.de
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2023111635
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
docks14.rzone.de
shades06.rzone.de
SPF Record
✓ Soft Fail (~all)
v=spf1 redirect=_spf.strato.com
📊 DNS lookups: 1/10
DMARC Record
✓ Reject
v=DMARC1;p=reject;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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
3 records- Berufsschulzentrum Radolfzell, Alemannenstr. 15, 78315 Radolfzell
- MS=ms71929959
- SPFv=spf1 redirect=_spf.strato.com
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