Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
zentiva.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-20 08:03:28 UTC · ↺ Refresh
MX Hostnames
- zentiva-com.mail.protection.outlook.com
MX Priorities
- zentiva-com.mail.protection.outlook.com: 1
A / AAAA Records
- 216.150.1.1 (no PTR)
Mail Server IPs
- 52.101.68.36 ↩ mail-db5pr02cu00104.inbound.protection.outlook.com
- 52.101.68.5 ↩ mail-du2pr03cu00105.inbound.protection.outlook.com
- 52.101.73.15 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
- 52.101.68.27 ↩ mail-db7pr03cu00503.inbound.protection.outlook.com
SOA Record
Raw SOA
pdns1.ultradns.net noc.safenames.net 2016053235 28800 1800 604800 3600
Primary NS (mname)
pdns1.ultradns.net
Admin Email (rname)
noc@safenames.net
Serial
2016053235
Refresh
28800s
Retry
1800s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
pdns4.ultradns.org
pdns5.ultradns.info
pdns6.ultradns.co.uk
pdns1.ultradns.net
pdns2.ultradns.net
pdns3.ultradns.org
SPF Record
✓ Strict (-all)
v=spf1 ip4:147.253.210.188 ip4:50.31.36.204 ip4:20.54.65.85 ip4:192.69.83.25 ip4:185.76.230.25 ip4:65.205.190.73 ip4:54.229.2.165 ip4:52.30.130.201 ip4:10.6.32.79 ip4:52.17.45.98 ip4:52.16.190.81 include:spf.protection.outlook.com include:musvc.com include:servers.mcsv.net include:eskerondemand.com include:spf.sendinblue.com include:mail.zendesk.com include:_spf.salesforce.com include:_spf.123formbuilder.com -all
📊 DNS lookups: 8/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; adkim=s; pct=100; rua=mailto:[email protected],mailto:[email protected],mailto:[email protected]!10m; ruf=mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Strict
📧 Reports → mailto:[email protected],mailto:[email protected],mailto:[email protected]!10m
DKIM Selectors
✓ 6 found
selector1._domainkey
selector2._domainkey
mail._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 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
9 records- atlassian-domain-verification=I2xfOv6CQvJzPMDaipZpwZqsJspMLjgvRVWNzIczKB4ADLQIBaTkK4CeZeaaBbBE
- atlassian-domain-verification=zMbTn0rCkTkgVCiipDoPAQQyoQ7CaTAOc3PnrqmhC8cY3EbKiqXosxz4TisguPe8
- SPFv=spf1 ip4:147.253.210.188 ip4:50.31.36.204 ip4:20.54.65.85 ip4:192.69.83.25 ip4:185.76.230.25 ip4:65.205.190.73 ip4:54.229.2.165 ip4:52.30.130.201 ip4:10.6.32.79 ip4:52.17.45.98 ip4:52.16.190.81 include:spf.protection.outlook.com include:musvc.com include:servers.mcsv.net include:eskerondemand.com include:spf.sendinblue.com include:mail.zendesk.com include:_spf.salesforce.com include:_spf.123formbuilder.com -all
- apple-domain-verification=COSLCmWnql6VWD9J
- MS=9454E0B890EBBF33D97E85475754222B0F738128
- brevo-code:93abc233f4deb9dd671f7b78156fabee
- Sendinblue-code:fb1a0aa3fc66cbec57851da35f3d6d89
- google-site-verification=AksY97BBuxh6vMhKI7DPbRt5M6i28BuLDMxSsFrmdsw
- cisco-ci-domain-verification=17b974a1de154edec17aa9a99205647be2325893cb7073b57f391d5ef147cf6c
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 · Customize →
See demo & docs
Deep verification
Full email verification for zentiva.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits