Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
adalbertstifter-schule.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-22 10:15:09 UTC · ↺ Refresh
MX Hostnames
- mail.adalbertstifter-schule.de
MX Priorities
- mail.adalbertstifter-schule.de: 10
A / AAAA Records
- 136.243.146.242 ↩ schlemihl.einundzwanzig.net
Mail Server IPs
- 136.243.146.242 ↩ schlemihl.einundzwanzig.net
SOA Record
Raw SOA
schlemihl.einundzwanzig.net 6609.schulamt.info 2025010717 10800 3600 604800 10800
Primary NS (mname)
schlemihl.einundzwanzig.net
Admin Email (rname)
6609@schulamt.info
Serial
2025010717
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
10800s
Nameservers (NS)
b.ns14.net
schlemihl.einundzwanzig.net
SPF Record
✓ Strict (-all)
v=spf1 +a +mx +a:schlemihl.einundzwanzig.net -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; adkim=s; aspf=s
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Strict
⚠ 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
1 record- SPFv=spf1 +a +mx +a:schlemihl.einundzwanzig.net -all
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