Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
dtc.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-28 08:55:41 UTC · ↺ Refresh
MX Hostnames
- dtc-de.mail.protection.outlook.com
MX Priorities
- dtc-de.mail.protection.outlook.com: 10
A / AAAA Records
- 85.158.4.220 (no PTR)
Mail Server IPs
- 52.101.73.28 ↩ mail-am7pr05cu00204.inbound.protection.outlook.com
- 52.101.73.12 ↩ mail-am4pr0401cu00104.inbound.protection.outlook.com
- 52.101.68.8 ↩ mail-du0pr03cu00100.inbound.protection.outlook.com
- 52.101.73.1 ↩ mail-am3pr04cu00501.inbound.protection.outlook.com
- 2a01:111:f403:ca04::5 ↩ mail-db3pr0202cu00205.inbound.protection.outlook.com
- 2a01:111:f403:ca04::6 ↩ mail-db4pr02cu00406.inbound.protection.outlook.com
- 2a01:111:f403:ca04:: ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca04::9 ↩ mail-db7pr03cu00601.inbound.protection.outlook.com
SOA Record
Raw SOA
ens01.drei.host hostmaster.drei.host 2025042401 10800 3600 604800 600
Primary NS (mname)
ens01.drei.host
Admin Email (rname)
hostmaster@drei.host
Serial
2025042401
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ens01.drei.host
ens02.drei.host
SPF Record
✓ Strict (-all)
v=spf1 ip4:194.107.0.0/20 IP4:66.206.205.18 IP4:64.7.120.69 IP4:64.7.120.70 IP4:64.7.120.73 IP4:64.7.120.74 include:spf.easybill-mail.de include:inxserver.com include:newtron.net include:spf.protection.outlook.com include:spf.eu.exclaimer.net -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; sp=none; fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
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
3 records- MS=ms44558489
- SPFv=spf1 ip4:194.107.0.0/20 IP4:66.206.205.18 IP4:64.7.120.69 IP4:64.7.120.70 IP4:64.7.120.73 IP4:64.7.120.74 include:spf.easybill-mail.de include:inxserver.com include:newtron.net include:spf.protection.outlook.com include:spf.eu.exclaimer.net -all
- ueSek0n+/lhVYuyhnNsERBUCx1ve26swWNnCdqWzRaEuUsSxfXhkiNEZpJIjYeC4F21rCXFWM2r106bIoHT2LQ==
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