Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
davidmason.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 12:51:16 UTC · ↺ Refresh
MX Hostnames
- davidmason-com.mail.protection.outlook.com
MX Priorities
- davidmason-com.mail.protection.outlook.com: 0
A / AAAA Records
- 104.19.154.92 (no PTR)
Mail Server IPs
- 52.101.9.26 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com
- 52.101.10.10 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 52.101.42.14 ↩ mail-mw2pr04cu00106.inbound.protection.outlook.com
- 52.101.10.1 ↩ mail-bn6pr02cu00301.inbound.protection.outlook.com
- 2a01:111:f403:f913::1 ↩ mail-cy5pr05cu00101.inbound.protection.outlook.com
- 2a01:111:f403:c902::4 ↩ mail-sj0pr03cu01504.inbound.protection.outlook.com
- 2a01:111:f403:c946::3 ↩ mail-ch0pr04cu00603.inbound.protection.outlook.com
- 2a01:111:f403:f901::2 ↩ mail-bl2pr02cu00402.inbound.protection.outlook.com
SOA Record
Raw SOA
ns81.worldnic.com namehost.worldnic.com 126010614 10800 3600 604800 3600
Primary NS (mname)
ns81.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
126010614
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns82.worldnic.com
ns81.worldnic.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spf-us.emailsignatures365.com include:_spf.psm.knowbe4.com include:_spf.samanage.com include:servers.mcsv.net -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1;p=reject;rua=mailto:[email protected];ruf=mailto:[email protected];aspf=s;adkim=s;fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._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
5 records- MS=ms26088542
- SPFv=spf1 include:spf.protection.outlook.com include:spf-us.emailsignatures365.com include:_spf.psm.knowbe4.com include:_spf.samanage.com include:servers.mcsv.net -all
- autodesk-domain-verification=WmVbQXyKVfhoibonGLTw
- solarwinds-service0desk-verification=a3414988856b39814c9fd69f444fb723
- apple-domain-verification=e3gCSHMOVOyI2X5b
Full email verification for davidmason.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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