biomark.com

Valid Email Server
Domain Lookup › biomark.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
biomark.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-23 16:18:43 UTC · ↺ Refresh

MX Hostnames

  • biomark-com.mail.protection.outlook.com

MX Priorities

  • biomark-com.mail.protection.outlook.com: 0

A / AAAA Records

  • 192.0.66.209 (no PTR)

Mail Server IPs

  • 52.101.68.16 ↩ mail-db4pr02cu00400.inbound.protection.outlook.com
  • 52.101.73.2 ↩ mail-as9pr07cu00302.inbound.protection.outlook.com
  • 52.101.68.5 ↩ mail-du2pr03cu00105.inbound.protection.outlook.com
  • 52.101.73.19 ↩ mail-as8pr04cu00803.inbound.protection.outlook.com

SOA Record

Raw SOA dns1.p03.nsone.net hostmaster.nsone.net 1743014572 43200 7200 1209600 3600
Primary NS (mname)
dns1.p03.nsone.net
Admin Email (rname)
hostmaster@nsone.net
Serial
1743014572
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
3600s

Nameservers (NS)

ns01.msddns.com
ns02.msddns.com
ns03.msddns.com
ns04.msddns.com
dns1.p03.nsone.net
dns2.p03.nsone.net
dns3.p03.nsone.net
dns4.p03.nsone.net

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; fo=1; ri=3600; rua=mailto:[email protected]; ruf=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

3 records
  • 373vetsehpmm6pie74ldig8e3p
  • SPFv=spf1 include:spf.protection.outlook.com -all
  • MS=ms22075140
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