Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
matthaei.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-20 11:45:48 UTC · ↺ Refresh
MX Hostnames
- matthaei-de.mail.protection.outlook.com
MX Priorities
- matthaei-de.mail.protection.outlook.com: 10
A / AAAA Records
- 217.160.0.141 ↩ 217-160-0-141.elastic-ssl.ui-r.com
Mail Server IPs
- 52.101.73.12 ↩ mail-am4pr0401cu00104.inbound.protection.outlook.com
- 52.101.68.0 ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
- 52.101.68.39 ↩ mail-db7pr03cu00607.inbound.protection.outlook.com
- 52.101.73.1 ↩ mail-am3pr04cu00501.inbound.protection.outlook.com
- 2a01:111:f403:ca04::f ↩ mail-db7pr03cu00507.inbound.protection.outlook.com
- 2a01:111:f403:ca09::b ↩ mail-am7pr05cu00103.inbound.protection.outlook.com
- 2a01:111:f403:ca09::7 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
- 2a01:111:f403:ca09::20 ↩ mail-as8pr05cu00400.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1040.ui-dns.de hostmaster.1und1.de 2016112690 28800 7200 604800 300
Primary NS (mname)
ns1040.ui-dns.de
Admin Email (rname)
hostmaster@1und1.de
Serial
2016112690
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns1040.ui-dns.de
ns1040.ui-dns.com
ns1040.ui-dns.org
ns1040.ui-dns.biz
SPF Record
✓ Strict (-all)
v=spf1 a:mail.matthaei.de ip4:195.243.197.132 ip4:195.243.197.142 include:_spf-eu.ionos.com include:spf.protection.outlook.com include:spf-de.emailsignatures365.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 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
6 records- _telesec-domain-validation=352333_2025-08-20_sWU16ysrifko6lkdHCLXVUjNNHSiuEcn9wtMGs2OOk8Zcfurp8
- atlassian-domain-verification=kKiC8chzr6tFyr2LeH/HLF0SZ7gViUsvydrOnjLZH4Z9FjgmRKgab8CZX3BPu0XT
- SPFv=spf1 a:mail.matthaei.de ip4:195.243.197.132 ip4:195.243.197.142 include:_spf-eu.ionos.com include:spf.protection.outlook.com include:spf-de.emailsignatures365.com -all
- fKlKwB36TP3wCSDL6L8pgUizNwm4KnSgVadEqLspU+yBDHsoTcTmyo9EWTeNknyEjC7APkTrX9HcYNWbEC4y+w==
- docusign=029539c5-85c3-4e6b-b831-7468768d8cf4
- apple-domain-verification=PNnnxzHaACImMmeQ
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