reddoor.biz

Valid Email Server
Domain Lookup › reddoor.biz

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
reddoor.biz
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-23 15:14:43 UTC · ↺ Refresh

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MX Hostnames

  • reddoor-biz.mail.protection.outlook.com

MX Priorities

  • reddoor-biz.mail.protection.outlook.com: 10

A / AAAA Records

  • 150.171.110.22 (no PTR)
  • 2620:1ec:29:1::35 (no PTR)
  • 2620:1ec:48:1::35

Mail Server IPs

  • 52.101.41.0 ↩ mail-byapr05cu00400.inbound.protection.outlook.com
  • 52.101.194.0 ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
  • 52.101.194.15 ↩ mail-ch4pr21cu00107.inbound.protection.outlook.com
  • 52.101.10.6 ↩ mail-bn1pr21cu00106.inbound.protection.outlook.com
  • 2a01:111:f403:c902::16 ↩ mail-byapr04cu00306.inbound.protection.outlook.com
  • 2a01:111:f403:f804::3 ↩ mail-co1pr03cu00403.inbound.protection.outlook.com
  • 2a01:111:f403:f90f:: ↩ mail-sa9pr04cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:c902:: ↩ mail-sj2pr05cu00300.inbound.protection.outlook.com

SOA Record

Raw SOA dns1.easydns.com zone.easydns.com 1774278862 43200 10800 1209600 300
Primary NS (mname)
dns1.easydns.com
Admin Email (rname)
zone@easydns.com
Serial
1774278862
Refresh
43200s
Retry
10800s
Expire
1209600s
Minimum TTL
300s

Nameservers (NS)

dns1.easydns.com
dns2.easydns.net
dns3.easydns.ca

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:_spf.intacct.com include:sendgrid.net -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; fo=1; rua=mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

DKIM Selectors

✓ 5 found
selector1._domainkey
selector2._domainkey
k1._domainkey
s1._domainkey
s2._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

8 records
  • facebook-domain-verification=hw4op4zxywv49s1fj6o1j5f46v0x8e
  • _globalsign-domain-verification=fV46pMdYpdnm9Ti0Jub1JdE2JWuBH6ZNHc89F2AWtR
  • intacct-esk=4FED1A54B6DB5ECFE053CB06A8C0351F
  • proxy-ssl.webflow.com
  • adobe-idp-site-verification=9b536d113dcea72bd13a2096ee328a862e85d4afdb4fc4331117b7429136c2b2
  • 00D300000000UZd=1TBTS000000012X
  • google-site-verification=JrIIIjjAZbqS-lo9EHMiJxSR4-EtBNOerfQmCw5ZJyI
  • SPFv=spf1 include:spf.protection.outlook.com include:_spf.intacct.com include:sendgrid.net -all
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