gymnasium-unterrieden.de

Valid Email Server

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
gymnasium-unterrieden.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-02 07:16:02 UTC · ↺ Refresh

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MX Hostnames

  • mta.verwaltung.schule-sindelfingen.de

MX Priorities

  • mta.verwaltung.schule-sindelfingen.de: 0

A / AAAA Records

  • 85.13.129.94 ↩ dd45310.kasserver.com

Mail Server IPs

  • 213.61.39.5 ↩ mta.verwaltung.schule-sindelfingen.de

SOA Record

Raw SOA ns5.kasserver.com hostmaster.kasserver.com 2511231014 28800 7200 1209600 7200
Primary NS (mname)
ns5.kasserver.com
Admin Email (rname)
hostmaster@kasserver.com
Serial
2511231014
Refresh
28800s
Retry
7200s
Expire
1209600s
Minimum TTL
7200s

Nameservers (NS)

ns6.kasserver.com
ns5.kasserver.com

SPF Record

✓ Strict (-all)
v=spf1 a mx a:mail.verwaltung.schule-sindelfingen.de include:_spf.belwue.de -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✓ 1 found
dkim._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: dkim

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

2 records
  • SPFv=spf1 a mx a:mail.verwaltung.schule-sindelfingen.de include:_spf.belwue.de -all
  • _jhzm527ylxiqpedcmvf0oeezkwpjurr
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