Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
tan3.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-30 19:57:51 UTC · ↺ Refresh
MX Hostnames
- mail.tan3.de
MX Priorities
- mail.tan3.de: 10
A / AAAA Records
- 135.181.126.217 ↩ www1.tan3.de
- 2a01:4f9:3080:32e9::17 ↩ www1.tan3.de
Mail Server IPs
- 136.243.242.10 ↩ mail.tan3.de
- 2a01:4f8:241:51e::10 ↩ mail.tan3.de
SOA Record
Raw SOA
ns1.first-ns.de dns.hetzner.com 2026031600 14400 1800 604800 6400
Primary NS (mname)
ns1.first-ns.de
Admin Email (rname)
dns@hetzner.com
Serial
2026031600
Refresh
14400s
Retry
1800s
Expire
604800s
Minimum TTL
6400s
Nameservers (NS)
ns1.first-ns.de
robotns2.second-ns.de
robotns3.second-ns.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:136.243.242.8/29 ip6:2a01:4f8:241:51e::/64 ip4:135.181.126.216/29 ip6:2a01:4f9:3080:32e9::/64 -all
📊 DNS lookups: 0/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; ruf=mailto:[email protected]; adkim=s; aspf=s;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 1 found
mail._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 ip4:136.243.242.8/29 ip6:2a01:4f8:241:51e::/64 ip4:135.181.126.216/29 ip6:2a01:4f9:3080:32e9::/64 -all
- v=BIMI1;l=https://tan3.de/assets/img/tan3.svg
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