Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
passportonlineinc.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 01:58:22 UTC · ↺ Refresh
MX Hostnames
- mx2-us1.ppe-hosted.com
- mx1-us1.ppe-hosted.com
MX Priorities
- mx2-us1.ppe-hosted.com: 20
- mx1-us1.ppe-hosted.com: 10
A / AAAA Records
- 207.189.109.200 (no PTR)
Mail Server IPs
- 148.163.129.51 ↩ mx2-us1.ppe-hosted.com
- 67.231.154.163 ↩ mx2-us1.ppe-hosted.com
- 148.163.129.50 ↩ mx1-us1.ppe-hosted.com
- 67.231.154.162 ↩ mx1-us1.ppe-hosted.com
SOA Record
Raw SOA
ns1.vacationport.net hostmaster.passportonlineinc.com 508 900 600 86400 3600
Primary NS (mname)
ns1.vacationport.net
Admin Email (rname)
hostmaster@passportonlineinc.com
Serial
508
Refresh
900s
Retry
600s
Expire
86400s
Minimum TTL
3600s
Nameservers (NS)
ns1.vacationport.net
ns2.vacationport.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:salesforce.com include:_spf.psm.knowbe4.com ip4:207.189.101.96/27 ip4:207.189.107.4 ip4:104.208.39.229 -all
📊 DNS lookups: 3/10
✓ 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
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
6 records- MS=ms85721941
- SPFv=spf1 include:spf.protection.outlook.com include:salesforce.com include:_spf.psm.knowbe4.com ip4:207.189.101.96/27 ip4:207.189.107.4 ip4:104.208.39.229 -all
- MS=ms89249646
- google-site-verification=Tsg9SkGy9VbPLQ3pDVZKpTVc_KZOSEVvv-WjRq1iUjE
- atlassian-domain-verification=wLPO0s153jy5latciPqzZx3HMZ0rqjqFZAul9XUrEko8paoUrO3Nu0oEzkxVBZ7b
- openai-domain-verification=dv-fqJxG22sT2rsUD8XaTtVulDl
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 passportonlineinc.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits