Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
biosys.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-31 01:58:42 UTC · ↺ Refresh
MX Hostnames
- mail.biosys.de
MX Priorities
- mail.biosys.de: 10
A / AAAA Records
- 194.126.239.5 ↩ wh03.yco.de
Mail Server IPs
- 194.126.239.5 ↩ wh03.yco.de
SOA Record
Raw SOA
dns.dns1.de hostmaster.internetwire.de 2025040701 28800 7200 604800 3600
Primary NS (mname)
dns.dns1.de
Admin Email (rname)
hostmaster@internetwire.de
Serial
2025040701
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
dns.dns4.de
dns.dns2.de
dns.dns3.de
dns.dns1.de
SPF Record
✓ Soft Fail (~all)
v=spf1 a mx ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; adkim=s; aspf=s
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 a mx ~all
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