Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
qdrt.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-29 06:26:39 UTC · ↺ Refresh
MX Hostnames
- qdrt-de.mail.protection.outlook.com
MX Priorities
- qdrt-de.mail.protection.outlook.com: 0
A / AAAA Records
- 138.201.138.146 ↩ s2.qdrt.de
- 2a01:4f8:172:3591::2 ↩ s2.qdrt.de
Mail Server IPs
- 52.101.73.22 ↩ mail-am7pr05cu00106.inbound.protection.outlook.com
- 52.101.68.3 ↩ mail-db7pr03cu00403.inbound.protection.outlook.com
- 52.101.68.25 ↩ mail-db8pr02cu00101.inbound.protection.outlook.com
- 52.101.73.12 ↩ mail-am4pr0401cu00104.inbound.protection.outlook.com
- 2a01:111:f403:ca04::f ↩ mail-db7pr03cu00507.inbound.protection.outlook.com
- 2a01:111:f403:ca09::e ↩ mail-am7pr05cu00206.inbound.protection.outlook.com
- 2a01:111:f403:ca04:: ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca04::e ↩ mail-db8pr02cu00106.inbound.protection.outlook.com
SOA Record
Raw SOA
hydrogen.ns.hetzner.com info.reintinger.de 2026021300 10800 36000 1209600 3600
Primary NS (mname)
hydrogen.ns.hetzner.com
Admin Email (rname)
info@reintinger.de
Serial
2026021300
Refresh
10800s
Retry
36000s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
helium.ns.hetzner.de
hydrogen.ns.hetzner.com
oxygen.ns.hetzner.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:135.125.203.225 include:_spf.mailersend.net a mx a:s2.qdrt.de a:s3.qdrt.de a:s4.qdrt.de include:spf.protection.outlook.com include:mailgun.org -all
📊 DNS lookups: 8/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected]; fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- apple-domain-verification=Ho2Oc56zo975rIioMoQi_H3tTlkb7KiYCFluhRat8qQ
- SPFv=spf1 ip4:135.125.203.225 include:_spf.mailersend.net a mx a:s2.qdrt.de a:s3.qdrt.de a:s4.qdrt.de include:spf.protection.outlook.com include:mailgun.org -all
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