marco-oil.pl

Valid Email Server
Domain Lookup › marco-oil.pl
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
marco-oil.pl
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-05-21 15:42:04 UTC · ↺ Refresh

MX Hostnames

  • marcooil-pl01c.mail.protection.outlook.com

MX Priorities

No priority data.

A / AAAA Records

  • 185.242.135.143

Mail Server IPs

No IPs resolved.

SOA Record

No SOA record found.

Nameservers (NS)

dns4.hitme.net.pl
dns3.hitme.net.pl

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:protection.outlook.com a mx ip4:185.242.135.143 -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

3 records
  • onet-domain-verification=1747cd9ec64ef6ef0b72ff1d296b6b2d1869d32d2f60b13e3f90342bc7e04b56
  • MS=ms90422917
  • SPFv=spf1 include:spf.protection.outlook.com include:protection.outlook.com a mx ip4:185.242.135.143 -all
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 marco-oil.pl

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits