Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cdh-computing.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-29 08:05:57 UTC · ↺ Refresh
MX Hostnames
- cdhcomputing-de0i.mail.protection.outlook.com
MX Priorities
- cdhcomputing-de0i.mail.protection.outlook.com: 10
A / AAAA Records
- 212.114.86.44 ↩ node06.wn-onlineservice.de
Mail Server IPs
- 52.101.73.26 ↩ mail-as9pr05cu01302.inbound.protection.outlook.com
- 52.101.73.6 ↩ mail-am6pr04cu00306.inbound.protection.outlook.com
- 52.101.68.32 ↩ mail-db3pr0202cu00200.inbound.protection.outlook.com
- 52.101.73.4 ↩ mail-am0pr83cu00404.inbound.protection.outlook.com
- 2a01:111:f403:ca04::e ↩ mail-db8pr02cu00106.inbound.protection.outlook.com
- 2a01:111:f403:ca09::8 ↩ mail-as2pr05cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09::e ↩ mail-am7pr05cu00206.inbound.protection.outlook.com
- 2a01:111:f403:ca09:: ↩ mail-am3pr04cu00500.inbound.protection.outlook.com
SOA Record
Raw SOA
dns.dns1.de hostmaster.domainbestellsystem.com 2026031804 300 300 86400 240
Primary NS (mname)
dns.dns1.de
Admin Email (rname)
hostmaster@domainbestellsystem.com
Serial
2026031804
Refresh
300s
Retry
300s
Expire
86400s
Minimum TTL
240s
Nameservers (NS)
dns.dns3.de
dns.dns4.de
dns.dns1.de
dns.dns2.de
SPF Record
✓ Strict (-all)
v=spf1 a mx ip4:188.64.248.6 ip4:188.64.248.2 include:spf.protection.outlook.com include:spf.DE.exclaimer.net -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine;rua=mailto:[email protected];aspf=r;adkim=r;ruf=mailto:[email protected];pct=100;
~ 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: 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
3 records- SPFv=spf1 a mx ip4:188.64.248.6 ip4:188.64.248.2 include:spf.protection.outlook.com include:spf.DE.exclaimer.net -all
- MS=ms15977257
- REDDCRYPT=5f2ba99412e1a10001f1eaf4
Full email verification for cdh-computing.de
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