Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
drk-tbb.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-02 21:57:39 UTC · ↺ Refresh
MX Hostnames
- drktbb-de0i.mail.protection.outlook.com
MX Priorities
- drktbb-de0i.mail.protection.outlook.com: 10
A / AAAA Records
- 80.82.221.203 ↩ cms05.dml.dt-internet.de
Mail Server IPs
- 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 52.101.170.2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 52.101.168.0 ↩ mail-beup281cu00100.inbound.protection.outlook.com
- 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 2a01:111:f403:ca2d:: ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca27:: ↩ mail-beup281cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
SOA Record
Raw SOA
dns01.dt-internet.de dnsadmin.dt-internet.de 3774528189 10800 3600 604800 14400
Primary NS (mname)
dns01.dt-internet.de
Admin Email (rname)
dnsadmin@dt-internet.de
Serial
3774528189
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
14400s
Nameservers (NS)
dns05.d-t-internet.de
dns01.dt-internet.de
SPF Record
✓ Soft Fail (~all)
v=spf1 a mx a:rz-wue-mail.changeit.de a:rz-nbg-mail.changeit.de include:ihr-webspace.de include:spf-de.emailsignatures365.com include:spf.protection.outlook.com ~all
📊 DNS lookups: 7/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; sp=quarantine; pct=100
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: quarantine
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
5 records- SPFv=spf1 a mx a:rz-wue-mail.changeit.de a:rz-nbg-mail.changeit.de include:ihr-webspace.de include:spf-de.emailsignatures365.com include:spf.protection.outlook.com ~all
- Foxit-domain-verification=553d0209630e43b0ae8ce702f1f03fbc
- swisssign-check=0d0I-td1x_si8LYm1xoegP8YjTk
- sophos-domain-verification=c58185ab3bd7fd3df992042c448d8d50499c8db825768d20f37f138e098cceda
- MS=ms97885300
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