Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
liesner-co.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 19:45:36 UTC · ↺ Refresh
MX Hostnames
- liesnerco-de01i.mail.protection.outlook.com
MX Priorities
- liesnerco-de01i.mail.protection.outlook.com: 0
A / AAAA Records
- 217.160.0.218 ↩ 217-160-0-218.elastic-ssl.ui-r.com
- 2001:8d8:100f:f000::26e ↩ 2001-08d8-100f-f000-0000-0000-0000-026e.elastic-ssl.ui-r.com
Mail Server IPs
- 52.101.73.12 ↩ mail-am4pr0401cu00104.inbound.protection.outlook.com
- 52.101.73.4 ↩ mail-am0pr83cu00404.inbound.protection.outlook.com
- 52.101.73.30 ↩ mail-am7pr05cu00306.inbound.protection.outlook.com
- 52.101.73.8 ↩ mail-am0pr04cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca04::e ↩ mail-db8pr02cu00106.inbound.protection.outlook.com
- 2a01:111:f403:ca09:: ↩ mail-am3pr04cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca09::b ↩ mail-am7pr05cu00103.inbound.protection.outlook.com
- 2a01:111:f403:ca04::5 ↩ mail-db3pr0202cu00205.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1117.ui-dns.org hostmaster.1und1.de 2017040306 28800 7200 604800 300
Primary NS (mname)
ns1117.ui-dns.org
Admin Email (rname)
hostmaster@1und1.de
Serial
2017040306
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns1117.ui-dns.biz
ns1117.ui-dns.com
ns1117.ui-dns.org
ns1117.ui-dns.de
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; adkim=r; aspf=r; pct=100
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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
1 record- SPFv=spf1 include:spf.protection.outlook.com -all
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