Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
tantris.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 23:09:21 UTC · ↺ Refresh
MX Hostnames
- mailx3-in-a.csaonline.de
- mailx3-in-b.csaonline.de
MX Priorities
- mailx3-in-a.csaonline.de: 10
- mailx3-in-b.csaonline.de: 20
A / AAAA Records
- 217.160.0.211 ↩ 217-160-0-211.elastic-ssl.ui-r.com
- 2001:8d8:100f:f000::28a ↩ 2001-08d8-100f-f000-0000-0000-0000-028a.elastic-ssl.ui-r.com
Mail Server IPs
- 81.27.162.79 ↩ mailx3-in-a.csaonline.de
- 213.166.247.79 ↩ mailx3-in-b.csaonline.de
SOA Record
Raw SOA
dns1.csaonline.de rz.csaonline.de 2025111002 10800 3600 604800 60
Primary NS (mname)
dns1.csaonline.de
Admin Email (rname)
rz@csaonline.de
Serial
2025111002
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
60s
Nameservers (NS)
dns2.csaonline.de
dns1.csaonline.de
SPF Record
✓ Strict (-all)
v=spf1 ip4:81.27.162.64/26 ip4:212.77.170.0/23 ip4:212.77.175.0/24 include:servers.mcsv.net a mx include:spf.mandrillapp.com include:spf.mailjet.com include:_spf.kundenserver.de include:_spf.perfora.net include:spf.protection.outlook.com a:mo4-p05-ob.smtp.rzone.de -all
📊 DNS lookups: 9/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; adkim=s; aspf=s;
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
k1._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: k1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- google-site-verification=7NLZxE9EJMr282ET4ZyaihelsbFYCdBHoSpaHe7Qlwg
- SPFv=spf1 ip4:81.27.162.64/26 ip4:212.77.170.0/23 ip4:212.77.175.0/24 include:servers.mcsv.net a mx include:spf.mandrillapp.com include:spf.mailjet.com include:_spf.kundenserver.de include:_spf.perfora.net include:spf.protection.outlook.com a:mo4-p05-ob.smtp.rzone.de -all
- MS=ms16197174
- zone-ownership-verification-5c9e07035e8adc9410bc9f4fc04b797bc1c49cf2806e7e0bdd889fb72d697dc2
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