Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
dubrau-gmbh.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-24 15:00:34 UTC · ↺ Refresh
MX Hostnames
- mail.dubrau-gmbh.de
MX Priorities
- mail.dubrau-gmbh.de: 1
A / AAAA Records
- 217.160.0.107 ↩ 217-160-0-107.elastic-ssl.ui-r.com
- 2001:8d8:100f:f000::23e ↩ 2001-08d8-100f-f000-0000-0000-0000-023e.elastic-ssl.ui-r.com
Mail Server IPs
- 195.4.139.244 ↩ mail.dubrau-gmbh.de
SOA Record
Raw SOA
ns1040.ui-dns.com hostmaster.1und1.de 2017061723 28800 7200 604800 300
Primary NS (mname)
ns1040.ui-dns.com
Admin Email (rname)
hostmaster@1und1.de
Serial
2017061723
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns1040.ui-dns.org
ns1040.ui-dns.biz
ns1040.ui-dns.com
ns1040.ui-dns.de
SPF Record
✓ Strict (-all)
v=spf1 mx a:mail.dubrau-gmbh.de a:mx00.kundenserver.de a:mx01.kundenserver.de a:mout.kundenserver.de a:mout-xforward.kundenserver.de a:mout-bounce.kundenserver.de ip4:20.93.203.168 -all
📊 DNS lookups: 7/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; adkim=s; aspf=s; fo=1:d:s; pct=100
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 392 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- google-site-verification=zqTafvfm8kwB7ZPvOa6XG98i33gobExRiFn0ozEMHO0
- SPFv=spf1 mx a:mail.dubrau-gmbh.de a:mx00.kundenserver.de a:mx01.kundenserver.de a:mout.kundenserver.de a:mout-xforward.kundenserver.de a:mout-bounce.kundenserver.de ip4:20.93.203.168 -all
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