Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
kustermann.de
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-30 10:30:26 UTC · ↺ Refresh
MX Hostnames
- de-smtp-inbound-1.mimecast.com
- de-smtp-inbound-2.mimecast.com
MX Priorities
- de-smtp-inbound-1.mimecast.com: 10
- de-smtp-inbound-2.mimecast.com: 10
A / AAAA Records
- 136.243.25.1 ↩ k96p84.meinserver.io
Mail Server IPs
- 194.104.108.22 ↩ de-smtp-inbound-1.mimecast.com
- 194.104.110.22 ↩ de-smtp-inbound-2.mimecast.com
SOA Record
Raw SOA
ns0.cluster-team.net domreg.cluster-team.com 2025072400 21600 1800 2419200 3600
Primary NS (mname)
ns0.cluster-team.net
Admin Email (rname)
domreg@cluster-team.com
Serial
2025072400
Refresh
21600s
Retry
1800s
Expire
2419200s
Minimum TTL
3600s
Nameservers (NS)
ns0.cluster-team.net
ns1.cluster-team.net
ns2.cluster-team.net
ns3.cluster-team.net
SPF Record
✓ Strict (-all)
v=spf1 mx ip4:188.174.248.10/32 include:de._netblocks.mimecast.com include:spf.sendinblue.com include:spf.protection.outlook.com include:spf.server-he.de ip4:136.243.25.1 -all
📊 DNS lookups: 5/10
✓ 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
✓ 1 found
s1._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
6 records- SPFv=spf1 mx ip4:188.174.248.10/32 include:de._netblocks.mimecast.com include:spf.sendinblue.com include:spf.protection.outlook.com include:spf.server-he.de ip4:136.243.25.1 -all
- 0ed1fe018af42d7346fc8b4d898bf017f5d2bd12d5
- google-site-verification=GYvzevHsn2eq9NeXYekY74HfPtBud3c6fILPxtUZ9Rk
- MS=ms61303940
- google-site-verification=8XzbXOknEKMUHF2kTNVEsSY4WZ5XW2siYsNlvN53M-c
- o3907rjgq3i2c7pmhlsf96ua0e
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