Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rdp-bw.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-04 17:55:26 UTC · ↺ Refresh
MX Hostnames
- mailrelay.rdp-bw.de
- rdp-bw.de
MX Priorities
- mailrelay.rdp-bw.de: 20
- rdp-bw.de: 10
A / AAAA Records
- 37.120.173.66 ↩ rdp-bw.de
Mail Server IPs
- 37.120.166.79 ↩ mailrelay.rdp-bw.de
- 37.120.173.66 ↩ rdp-bw.de
SOA Record
Raw SOA
root-dns.netcup.net dnsadmin.netcup.net 2025122986 60 60 60 60
Primary NS (mname)
root-dns.netcup.net
Admin Email (rname)
dnsadmin@netcup.net
Serial
2025122986
Refresh
60s
Retry
60s
Expire
60s
Minimum TTL
60s
Nameservers (NS)
second-dns.netcup.net
third-dns.netcup.net
root-dns.netcup.net
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.mailjet.com +a +a:mailrelay.rdp-bw.de +mx ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; ruf=mailto:[email protected],mailto:[email protected]; aspf=r; adkim=r; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- SPFv=spf1 include:spf.mailjet.com +a +a:mailrelay.rdp-bw.de +mx ~all
- directFedAuthUrl=https://keycloak.rdp-bw.de/realms/test/protocol/saml
- google-site-verification=y58jMccJNo48mbgZGLNHKA246_u_HEsyXz7jBA-Dd0g
- google-site-verification=ki8UEKPCkL4v-Lakq4qE8rbSS5lRBuxuHczHzvx-_Iw
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 rdp-bw.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits