Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
koppert.com.mx
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-01 05:27:41 UTC · ↺ Refresh
MX Hostnames
- koppert-com-mx.mail.protection.outlook.com
MX Priorities
- koppert-com-mx.mail.protection.outlook.com: 0
A / AAAA Records
- 94.130.156.91 ↩ static.91.156.130.94.clients.your-server.de
Mail Server IPs
- 52.101.73.26 ↩ mail-as9pr05cu01302.inbound.protection.outlook.com
- 52.101.73.15 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
- 52.101.73.11 ↩ mail-am1pr04cu00103.inbound.protection.outlook.com
- 52.101.73.28 ↩ mail-am7pr05cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca09::20 ↩ mail-as8pr05cu00400.inbound.protection.outlook.com
- 2a01:111:f403:ca04::6 ↩ mail-db4pr02cu00406.inbound.protection.outlook.com
- 2a01:111:f403:ca09:: ↩ mail-am3pr04cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca09::3 ↩ mail-am6pr04cu00303.inbound.protection.outlook.com
SOA Record
Raw SOA
ns3.firstfind.nl hostmaster.firstfind.nl 2026032601 16384 2048 1048576 14400
Primary NS (mname)
ns3.firstfind.nl
Admin Email (rname)
hostmaster@firstfind.nl
Serial
2026032601
Refresh
16384s
Retry
2048s
Expire
1048576s
Minimum TTL
14400s
Nameservers (NS)
ns5.firstfind.net
ns4.firstfind.nl
ns3.firstfind.nl
SPF Record
✓ Soft Fail (~all)
v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email include:spf.protection.outlook.com ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate 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
✓ 2 found
selector1._domainkey
selector2._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
1 record- SPFv=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email include:spf.protection.outlook.com ~all
Full email verification for koppert.com.mx
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits