Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
csb-doebeln.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 17:09:58 UTC · ↺ Refresh
MX Hostnames
- mail.csb-doebeln.de
MX Priorities
- mail.csb-doebeln.de: 10
A / AAAA Records
- 2.58.54.147 ↩ root148.hostonserver.de
- 2a0d:2146:8660:1::b2 ↩ root148.hostonserver.de
Mail Server IPs
- 2.58.54.147 ↩ root148.hostonserver.de
- 2a0d:2146:8660:1::b2 ↩ root148.hostonserver.de
SOA Record
Raw SOA
ns1.machteam.de boitz.csb-doebeln.de 2026022502 10800 3600 604800 10800
Primary NS (mname)
ns1.machteam.de
Admin Email (rname)
boitz@csb-doebeln.de
Serial
2026022502
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
10800s
Nameservers (NS)
ns2.machteam.de
ns1.machteam.de
SPF Record
✓ Strict (-all)
v=spf1 +a +mx +a:root148.hostonserver.de -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1:d:s; pct=10
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
⚠ Policy applies to 10% of failing messages only
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 +a +mx +a:root148.hostonserver.de -all
- MS=039D2476E51D4287C444A30F9FCEEE94C70A2B40
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