Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
dudek.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-23 20:28:58 UTC · ↺ Refresh
MX Hostnames
- dudek-com.mail.protection.outlook.com
MX Priorities
- dudek-com.mail.protection.outlook.com: 10
A / AAAA Records
- 45.223.182.26 (no PTR)
- 45.223.162.26 (no PTR)
Mail Server IPs
- 52.101.50.10 ↩ mail-mw2pr02cu00502.inbound.protection.outlook.com
- 52.101.41.6 ↩ mail-sj0pr03cu01406.inbound.protection.outlook.com
- 52.101.11.10 ↩ mail-sa9pr03cu00202.inbound.protection.outlook.com
- 52.101.41.24 ↩ mail-sj0pr03cu01600.inbound.protection.outlook.com
- 2a01:111:f403:f905::3 ↩ mail-dm5pr02cu00203.inbound.protection.outlook.com
- 2a01:111:f403:f901:: ↩ mail-mn2pr04cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c902::14 ↩ mail-byapr04cu00204.inbound.protection.outlook.com
- 2a01:111:f403:f907::1 ↩ mail-dm1pr04cu00201.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.a0.impervasecuredns.net itadmin.dudek.com 5 3600 600 604800 3600
Primary NS (mname)
ns1.a0.impervasecuredns.net
Admin Email (rname)
itadmin@dudek.com
Serial
5
Refresh
3600s
Retry
600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns1.a0.impervasecuredns.net
ns1.a2.impervasecuredns.net
ns1.a1.impervasecuredns.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:107.20.210.250 ip4:52.1.14.157 ip4:20.3.161.82 include:spf.protection.outlook.com include:servers.mcsv.net include:spf-westus.emailsignatures365.com include:_spf.psm.knowbe4.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 5 found
selector1._domainkey
selector2._domainkey
k1._domainkey
s1._domainkey
s2._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
13 records- MS=ms29418927
- 2zTAGZdX8ZyouXfMYyLOpnhESmDacgJ2nMgtlIgHQ4acWpcIdFkkv9MEYuqvCyud1UXeNUCO4CAWZPLARpdbaQ==
- 2j8250vmts6f9e9jdbkrb3as5u
- SPFv=spf1 ip4:107.20.210.250 ip4:52.1.14.157 ip4:20.3.161.82 include:spf.protection.outlook.com include:servers.mcsv.net include:spf-westus.emailsignatures365.com include:_spf.psm.knowbe4.com -all
- v=msv1 t=F4B08077-51E8-4BEB-9B05-628AD404B4E1
- nxwgfzg.impervadns.net
- nearmap-domain-verification=540af9b88ad005efe8f0c871c5b370dfc4648697385d02bca918398f57bc3294
- globalsign-domain-verification=9D94E6730A678DCD49FBE1BE28FCECD6
- dropbox-domain-verification=5rxd8e55h1k1
- docusign=d0ba5373-b8eb-4aa1-b30b-6ba88ad773ca
- docusign=5e694e3e-c137-4237-8951-8bfb48043333
- box-domain-verification=dfd096824047cbe74c41a2335d523f987851ad0e02c7ae37d82504b2278a9d95
- ahB0y+Ly2sDPN6BjnYhOJseYRkGQoQp0boEW4DBus6PNU0V0kN8P57D6f6RPXIDm2rv2Aqa7q0WRVkeqD4w/4w==
Full email verification for dudek.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits