Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
jjzaidman.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-25 00:15:39 UTC · ↺ Refresh
MX Hostnames
- jjzaidman-com.mail.protection.outlook.com
MX Priorities
- jjzaidman-com.mail.protection.outlook.com: 0
A / AAAA Records
- 104.21.28.50 (no PTR)
- 172.67.144.64 (no PTR)
- 2606:4700:3032::6815:1c32
- 2606:4700:3037::ac43:9040
Mail Server IPs
- 52.101.10.1 ↩ mail-bn6pr02cu00301.inbound.protection.outlook.com
- 52.101.8.46 ↩ mail-dm6pr05cu00406.inbound.protection.outlook.com
- 52.101.41.183 ↩ mail-byapr04cu00307.inbound.protection.outlook.com
- 52.101.40.24 ↩ mail-cy5pr05cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c903::3 ↩ mail-mw2pr02cu00503.inbound.protection.outlook.com
- 2a01:111:f403:c902::6 ↩ mail-sj0pr21cu00106.inbound.protection.outlook.com
- 2a01:111:f403:c931::1 ↩ mail-sa9pr03cu00201.inbound.protection.outlook.com
- 2a01:111:f403:c92c::3 ↩ mail-dm5pr04cu00103.inbound.protection.outlook.com
SOA Record
Raw SOA
sid.ns.cloudflare.com dns.cloudflare.com 2399841396 10000 2400 604800 1800
Primary NS (mname)
sid.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399841396
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
zara.ns.cloudflare.com
sid.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:sendgrid.net -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
5 records- google-site-verification=K1MxL8cSJ-E0g60Ri8S7m-6bbSjTgq6hdaG-0HWC_dQ
- google-site-verification=O3tU1sFL6jdiaKbQ3mPLHEuTbqYClOQdJJqPAstxufQ
- SPFv=spf1 include:spf.protection.outlook.com include:sendgrid.net -all
- MS=ms76546348
- google-site-verification=1kom60FOsGNwjWiIq2BT4uLdl16wJBk_A9B8RTa29AU
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 jjzaidman.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits