b8one.com

Valid Email Server

Domain Overview

DNS: โœ“ 2mo ago Checker: โœ“ 2mo ago
b8one.com
Yes
โœ“ Yes
Outlook
No
No
โš  Yes
No
No
Did you mean: [email protected]

Checked via [email protected] ยท 2026-03-29 03:45:55 UTC ยท โ†บ Refresh

MX Hostnames

  • b8one-com.mail.protection.outlook.com

MX Priorities

  • b8one-com.mail.protection.outlook.com: 0

A / AAAA Records

  • 76.76.21.21 (no PTR)

Mail Server IPs

  • 52.101.194.0 โ†ฉ mail-ch5pr02cu00200.inbound.protection.outlook.com
  • 52.101.41.54 โ†ฉ mail-sj2pr05cu00506.inbound.protection.outlook.com
  • 52.101.10.12 โ†ฉ mail-bn1pr21cu00204.inbound.protection.outlook.com
  • 52.101.41.4 โ†ฉ mail-sj2pr05cu00204.inbound.protection.outlook.com
  • 2a01:111:f403:f905::3 โ†ฉ mail-dm5pr02cu00203.inbound.protection.outlook.com
  • 2a01:111:f403:c946::5 โ†ฉ mail-ch4pr21cu00105.inbound.protection.outlook.com
  • 2a01:111:f403:f903:: (no PTR)
  • 2a01:111:f403:c91d::a โ†ฉ mail-co1pr21cu00202.inbound.protection.outlook.com

SOA Record

Raw SOA joel.ns.cloudflare.com dns.cloudflare.com 2396932029 10000 2400 604800 1800
Primary NS (mname)
joel.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2396932029
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

joel.ns.cloudflare.com
liv.ns.cloudflare.com

SPF Record

โœ“ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
๐Ÿ“Š DNS lookups: 1/10
โœ“ Hard fail (-all) โ€” strict enforcement

DMARC Record

โœ— p=none
v=DMARC1; p=none; pct=100
โš  p=none โ€” monitoring only, no enforcement
๐Ÿ“‹ SPF alignment: Relaxed ยท DKIM alignment: Relaxed
โš  No aggregate reports (rua= not set)

DKIM Selectors

โœ“ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
โœ“ Public key: 216 chars (valid)
โœ“ 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
  • SPFv=spf1 include:spf.protection.outlook.com -all
  • MS=ms76034534
  • atlassian-domain-verification=ejUdII1Sz3fGd52hXM4yc8XDcCgSq1dGS7I1UbJOEywIRYFeliyeamkdAvZRW2nx
  • atlassian-sending-domain-verification=6ed0f715-2ab4-4553-bd38-0990ddce684e
  • facebook-domain-verification=mb97tkrjy4qmfs7mp1h0dyimjv0r7k
  • facebook-domain-verification=v1x5wziv7i0tynycjbtgbpuze7jh27
  • google-site-verification=hKyPVDbXLNJFoDNpSet3FYbZKSPmr-2oxN_N48XAf10
  • include:_spf.atlassian.net
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