333corporate.com

Valid Email Server
Domain Lookup › 333corporate.com

Domain Overview

DNS: ✓ 21d ago Checker: ✓ 21d ago
333corporate.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-09-16 00:32:19 UTC · ↺ Refresh

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MX Hostnames

  • 333corporate-com.mail.protection.outlook.com

MX Priorities

  • 333corporate-com.mail.protection.outlook.com: 10

A / AAAA Records

  • 54.77.28.22 ↩ ec2-54-77-28-22.eu-west-1.compute.amazonaws.com
  • 34.252.116.32 ↩ ec2-34-252-116-32.eu-west-1.compute.amazonaws.com

Mail Server IPs

  • 52.101.68.27 ↩ mail-db7pr03cu00503.inbound.protection.outlook.com
  • 52.101.185.114 ↩ mail-zrxpr04cu00102.inbound.protection.outlook.com
  • 52.101.185.24 ↩ mail-zrxpr07cu00100.inbound.protection.outlook.com
  • 52.101.185.21 ↩ mail-zrxpr05cu00105.inbound.protection.outlook.com
  • 2a01:111:f403:ca38::a ↩ mail-wa4pr05cu00102.inbound.protection.outlook.com
  • 2a01:111:f403:ca3c::6 ↩ mail-zrxpr04cu00106.inbound.protection.outlook.com
  • 2a01:111:f403:ca21::c ↩ mail-matpr04cu00204.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::b ↩ mail-dbbpr03cu00103.inbound.protection.outlook.com

SOA Record

Raw SOA ns-407.awsdns-50.com awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-407.awsdns-50.com
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-407.awsdns-50.com
ns-1020.awsdns-63.net
ns-1249.awsdns-28.org
ns-1613.awsdns-09.co.uk

SPF Record

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

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 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

2 records
  • google-site-verification=hPPEOWsscGZtt7hgpCN19cMm-tzfkQG11r50Qn_HeZMMS=ms45535805
  • SPFv=spf1 mx include:amazonses.com include:spf.protection.outlook.com -all
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