Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
radsport-duelmen.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-03 06:41:51 UTC · ↺ Refresh
MX Hostnames
- mail.radsport-duelmen.de
- mx2f65.netcup.net
- radsportduelmen-de02b.mail.protection.outlook.com
MX Priorities
- mx2f65.netcup.net: 50
- radsportduelmen-de02b.mail.protection.outlook.com: 5
- mail.radsport-duelmen.de: 10
A / AAAA Records
- 188.68.47.99 ↩ a2f63.netcup.net
- 2a03:4000:30:3c5f::11:5535
Mail Server IPs
- 188.68.47.101 ↩ mx2f65.netcup.net
- 52.101.168.0 ↩ mail-beup281cu00100.inbound.protection.outlook.com
- 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 52.101.170.2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 2a01:111:f403:ca2d:: ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 2a01:111:f403:ca27:: ↩ mail-beup281cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
root-dns.netcup.net dnsadmin.netcup.net 2022121404 28800 7200 1209600 86400
Primary NS (mname)
root-dns.netcup.net
Admin Email (rname)
dnsadmin@netcup.net
Serial
2022121404
Refresh
28800s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
third-dns.netcup.net
second-dns.netcup.net
root-dns.netcup.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:_spf.webhosting.systems -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo 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
2 records- MS=ms21094689
- SPFv=spf1 include:spf.protection.outlook.com include:_spf.webhosting.systems -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 radsport-duelmen.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits