Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
strategyinstitute.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 23:55:38 UTC · ↺ Refresh
MX Hostnames
- strategyinstitute-com.mail.protection.outlook.com
MX Priorities
- strategyinstitute-com.mail.protection.outlook.com: 0
A / AAAA Records
- 45.60.23.169 (no PTR)
- 45.60.25.169 (no PTR)
Mail Server IPs
- 52.101.190.2 ↩ mail-yt3pr01cu00602.inbound.protection.outlook.com
- 52.101.190.3 ↩ mail-yt6pr01cu00103.inbound.protection.outlook.com
- 52.101.192.1 ↩ mail-yqzpr01cu01001.inbound.protection.outlook.com
- 52.101.192.0 ↩ mail-yqzpr01cu00900.inbound.protection.outlook.com
- 2a01:111:f403:c942::3 ↩ mail-yt6pr01cu00103.inbound.protection.outlook.com
- 2a01:111:f403:c942:: ↩ mail-yt5pr01cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c944::1 ↩ mail-yqzpr01cu01001.inbound.protection.outlook.com
- 2a01:111:f403:c942::2 ↩ mail-yt3pr01cu00602.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.strategyinstitute.com root.str.strategyinstitute.com 2025112600 3600 7200 1209600 86400
Primary NS (mname)
ns1.strategyinstitute.com
Admin Email (rname)
root@str.strategyinstitute.com
Serial
2025112600
Refresh
3600s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns2.strategyinstitute.com
ns1.strategyinstitute.com
SPF Record
✓ Strict (-all)
v=spf1 include:sendersrv.com +ip4:192.232.247.113 include:spf.protection.outlook.com include:21235114.spf54.hubspotemail.net -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; pct=100;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
default._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
3 records- google-site-verification=8ue9FJArZ_7fTf6KnzgzrCRaa0hjSVwPs1dAFScWVHo
- SPFv=spf1 include:sendersrv.com +ip4:192.232.247.113 include:spf.protection.outlook.com include:21235114.spf54.hubspotemail.net -all
- globalsign-domain-verification=04392BA917BADF6AAA7C6B030B96920E
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 strategyinstitute.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits