Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
capstonec.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 17:00:37 UTC · ↺ Refresh
MX Hostnames
- capstonec-com.mail.protection.outlook.com
MX Priorities
- capstonec-com.mail.protection.outlook.com: 0
A / AAAA Records
- 141.193.213.10 (no PTR)
Mail Server IPs
- 52.101.41.24 ↩ mail-sj0pr03cu01600.inbound.protection.outlook.com
- 52.101.41.56 ↩ mail-sj0pr21cu00100.inbound.protection.outlook.com
- 52.101.8.51 ↩ mail-dm1pr04cu00203.inbound.protection.outlook.com
- 52.101.41.28 ↩ mail-sj0pr03cu01504.inbound.protection.outlook.com
- 2a01:111:f403:c92c::4 ↩ mail-dm6pr05cu00404.inbound.protection.outlook.com
- 2a01:111:f403:f90a:: ↩ mail-bn6pr02cu00300.inbound.protection.outlook.com
- 2a01:111:f403:f901:: ↩ mail-mn2pr04cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f913::1 ↩ mail-cy5pr05cu00101.inbound.protection.outlook.com
SOA Record
Raw SOA
ns43.domaincontrol.com dns.jomax.net 2026030400 28800 7200 604800 600
Primary NS (mname)
ns43.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2026030400
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns44.domaincontrol.com
ns43.domaincontrol.com
SPF Record
✓ Strict (-all)
v=spf1 a:tracker-campaigner.com ip4:51.141.46.182 include:spf.protection.outlook.com include:_spf.psm.knowbe4.com include:44299794.spf02.hubspotemail.net -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 5 found
selector1._domainkey
selector2._domainkey
mail._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 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- SPFv=spf1 a:tracker-campaigner.com ip4:51.141.46.182 include:spf.protection.outlook.com include:_spf.psm.knowbe4.com include:44299794.spf02.hubspotemail.net -all
- ZOOM_verify_s7clRW-9T6maW9S6eCDGmw
- atlassian-domain-verification=eS8fv/MG9fxie50D10vZLVQji04sU5YHDio4ier8NwlcbFroWyiIwagsKHLeSgoQ
- vmware-cloud-verification-553c257e-6557-4992-9cad-439287a55a8f
- google-site-verification=8Ur1UayQm4rnHcd2bGNW0q6y7Ob2kL9R8i_RtICNmzA
Full email verification for capstonec.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits