Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
capstonebuilding.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 02:55:36 UTC · ↺ Refresh
MX Hostnames
- capstonebuilding-com.mail.protection.outlook.com
MX Priorities
- capstonebuilding-com.mail.protection.outlook.com: 10
A / AAAA Records
- 139.177.206.14 ↩ proxy.infomedia.com
Mail Server IPs
- 52.101.10.1 ↩ mail-bn6pr02cu00301.inbound.protection.outlook.com
- 52.101.8.51 ↩ mail-dm1pr04cu00203.inbound.protection.outlook.com
- 52.101.41.58 ↩ mail-sj0pr02cu00102.inbound.protection.outlook.com
- 52.101.9.14 ↩ mail-bl0pr03cu00206.inbound.protection.outlook.com
- 2a01:111:f403:f90a:: ↩ mail-bn6pr02cu00300.inbound.protection.outlook.com
- 2a01:111:f403:f90d:: ↩ mail-sn1pr0501cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c902::5 ↩ mail-sj2pr05cu00505.inbound.protection.outlook.com
- 2a01:111:f403:f901::2 ↩ mail-bl2pr02cu00402.inbound.protection.outlook.com
SOA Record
Raw SOA
ns23.worldnic.com namehost.worldnic.com 126011511 10800 3600 604800 3600
Primary NS (mname)
ns23.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
126011511
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns23.worldnic.com
ns24.worldnic.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:23.119.71.10 mx a:email.capstonebuilding.com mx a:server1.cbc.capstonebuilding.com include:spf.protection.outlook.com include:SendGrid.net -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 13 found
google._domainkey
selector1._domainkey
selector2._domainkey
default._domainkey
mail._domainkey
dkim._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
zoho._domainkey
sendgrid._domainkey
mxvault._domainkey
amazonses._domainkey
⚠ Public key (p=) missing in DKIM record for selector google.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- tg46chieaamsmac7h4pb9kslpj.
- SPFv=spf1 ip4:23.119.71.10 mx a:email.capstonebuilding.com mx a:server1.cbc.capstonebuilding.com include:spf.protection.outlook.com include:SendGrid.net -all
- duo_sso_verification=UoPdAsxEhl3MX1V6bdfyaQRG8FcKLjZ5NCMzWAGmqEAX15KcmkQVX8sSMWlaEZr2
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