Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
jac-systeme.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 11:22:58 UTC · ↺ Refresh
MX Hostnames
- mxext1.mailbox.org
- mxext2.mailbox.org
- mxext3.mailbox.org
MX Priorities
- mxext1.mailbox.org: 10
- mxext3.mailbox.org: 30
- mxext2.mailbox.org: 20
A / AAAA Records
- 5.9.29.176 ↩ www.jac-dns.de
Mail Server IPs
- 80.241.60.212 ↩ mx1.mailbox.org
- 2001:67c:2050:104::1:25:1 ↩ mx1.mailbox.org
- 80.241.60.216 ↩ mx3.mailbox.org
- 2001:67c:2050:104::3:25:1 ↩ mx3.mailbox.org
- 80.241.60.215 ↩ mx2.mailbox.org
- 2001:67c:2050:104::2:25:1 ↩ mx2.mailbox.org
SOA Record
Raw SOA
nsa5.schlundtech.de domain.jac-systeme.de 2024090901 43200 7200 1209600 600
Primary NS (mname)
nsa5.schlundtech.de
Admin Email (rname)
domain@jac-systeme.de
Serial
2024090901
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
600s
Nameservers (NS)
nsc5.schlundtech.de
nsa5.schlundtech.de
nsb5.schlundtech.de
nsd5.schlundtech.de
SPF Record
✓ Strict (-all)
v=spf1 include:mailbox.org include:ispgateway.de ip4:90.187.28.205 ip4:80.153.140.189 ip4:176.9.69.21 a mx -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1;p=none;rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
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
2 records- google-site-verification=TGqmV5KuFi1GBDgxjgkJdqctAc69cWuPy0QUc24HBS0
- SPFv=spf1 include:mailbox.org include:ispgateway.de ip4:90.187.28.205 ip4:80.153.140.189 ip4:176.9.69.21 a mx -all
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