drshuster.net

Valid Email Server
Domain Lookup › drshuster.net

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
drshuster.net
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-20 08:06:44 UTC · ↺ Refresh

MX Hostnames

  • drshuster-net.mail.protection.outlook.com

MX Priorities

  • drshuster-net.mail.protection.outlook.com: 0

A / AAAA Records

  • 104.21.83.225 (no PTR)
  • 172.67.182.99 (no PTR)
  • 2606:4700:3033::6815:53e1
  • 2606:4700:3036::ac43:b663

Mail Server IPs

  • 52.101.9.20 ↩ mail-bl0pr02cu00604.inbound.protection.outlook.com
  • 52.101.42.16 ↩ mail-co1pr05cu00300.inbound.protection.outlook.com
  • 52.101.194.0 ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
  • 52.101.11.13 ↩ mail-sn1pr0501cu00205.inbound.protection.outlook.com
  • 2a01:111:f403:c927::1 ↩ mail-bn8pr05cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:f90f::1 ↩ mail-sa9pr04cu00201.inbound.protection.outlook.com
  • 2a01:111:f403:f908::1 ↩ mail-bn1pr04cu00101.inbound.protection.outlook.com
  • 2a01:111:f403:c91d:: ↩ mail-mw2pr04cu00100.inbound.protection.outlook.com

SOA Record

Raw SOA eve.ns.cloudflare.com dns.cloudflare.com 2398415469 10000 2400 604800 1800
Primary NS (mname)
eve.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398415469
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

john.ns.cloudflare.com
eve.ns.cloudflare.com

SPF Record

✓ Soft Fail (~all)
v=spf1 a mx include:spf.protection.outlook.com include:relay.mailchannels.net include:sendgrid.net ip4:23.253.183.0/24 ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

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

2 records
  • SPFv=spf1 a mx include:spf.protection.outlook.com include:relay.mailchannels.net include:sendgrid.net ip4:23.253.183.0/24 ~all
  • MS=ms63821767
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