Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
captiva-power.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 21:59:56 UTC · ↺ Refresh
MX Hostnames
- captivapower-com01i.mail.protection.outlook.com
MX Priorities
- captivapower-com01i.mail.protection.outlook.com: 0
A / AAAA Records
- 176.9.135.179 ↩ k29k85.meinserver.io
Mail Server IPs
- 52.101.68.27 ↩ mail-db7pr03cu00503.inbound.protection.outlook.com
- 52.101.73.15 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
- 52.101.68.12 ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
- 52.101.68.3 ↩ mail-db7pr03cu00403.inbound.protection.outlook.com
- 2a01:111:f403:ca04::a ↩ mail-du0pr03cu00102.inbound.protection.outlook.com
- 2a01:111:f403:ca04::8 ↩ mail-db5pr02cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca04::d ↩ mail-db6pr03cu00105.inbound.protection.outlook.com
- 2a01:111:f403:ca04::4 ↩ mail-db4pr02cu00204.inbound.protection.outlook.com
SOA Record
Raw SOA
dns.sim-networks.com support.sim-networks.com 2026021121 10800 3600 604800 86400
Primary NS (mname)
dns.sim-networks.com
Admin Email (rname)
support@sim-networks.com
Serial
2026021121
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
ns3.sim-networks.com
ns2.sim-networks.com
ns1.sim-networks.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spf.rackport.net ip4:62.157.197.130 ip4:62.157.197.133 ip4:193.158.59.138 include:spf.eu.exclaimer.net -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; 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
✓ 2 found
selector1._domainkey
selector2._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
2 records- SPFv=spf1 include:spf.protection.outlook.com include:spf.rackport.net ip4:62.157.197.130 ip4:62.157.197.133 ip4:193.158.59.138 include:spf.eu.exclaimer.net -all
- MS=ms47934226
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for captiva-power.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits