Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
bios-tec.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 04:55:20 UTC · ↺ Refresh
MX Hostnames
- biostec-de01b.mail.protection.outlook.com
MX Priorities
- biostec-de01b.mail.protection.outlook.com: 10
A / AAAA Records
- 85.215.66.162 (no PTR)
Mail Server IPs
- 52.101.73.4 ↩ mail-am0pr83cu00404.inbound.protection.outlook.com
- 52.101.68.12 ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
- 52.101.68.25 ↩ mail-db8pr02cu00101.inbound.protection.outlook.com
- 52.101.73.16 ↩ mail-as2pr05cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09::9 ↩ mail-as8pr04cu00801.inbound.protection.outlook.com
- 2a01:111:f403:ca04::9 ↩ mail-db7pr03cu00601.inbound.protection.outlook.com
- 2a01:111:f403:ca04::2 ↩ mail-du2pr03cu00102.inbound.protection.outlook.com
- 2a01:111:f403:ca09:: ↩ mail-am3pr04cu00500.inbound.protection.outlook.com
SOA Record
Raw SOA
shades18.rzone.de hostmaster.strato-rz.de 2020060713 86400 7200 604800 300
Primary NS (mname)
shades18.rzone.de
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2020060713
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
shades18.rzone.de
docks05.rzone.de
SPF Record
✓ Strict (-all)
v=spf1 a:web.bios-tec.de include:26003044.spf04.hubspotemail.net include:spf.protection.outlook.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 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
5 records- atlassian-domain-verification=F26WYVMQPa5CKS7e7IHmwy7xcka3Z3IVjJ7Xo1AY1b1SG1/a6zTAqmZghzX2zhZr
- 9Fu1yP5ZuAkIGWPxdm33DivSlPHFjnAA0dbJeojEjpOxkTje4MCdcAvjyHrkj+N2povVK+eitOqlPDVdsBDPBA==
- SPFv=spf1 a:web.bios-tec.de include:26003044.spf04.hubspotemail.net include:spf.protection.outlook.com -all
- 2a7475h0josb3omhs43ved352s
- apple-domain-verification=JNM1QzeUg5ElzB3s
Full email verification for bios-tec.de
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits