Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
ruhlgmbh.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-01 08:34:37 UTC · ↺ Refresh
MX Hostnames
- mail2.ruhlgmbh.de
MX Priorities
- mail2.ruhlgmbh.de: 10
A / AAAA Records
No A/AAAA records found.
Mail Server IPs
- 128.140.37.187 ↩ hostserver.bt-unternehmensgruppe.de
SOA Record
Raw SOA
root-dns.netcup.net dnsadmin.netcup.net 2025102311 28800 7200 1209600 60
Primary NS (mname)
root-dns.netcup.net
Admin Email (rname)
dnsadmin@netcup.net
Serial
2025102311
Refresh
28800s
Retry
7200s
Expire
1209600s
Minimum TTL
60s
Nameservers (NS)
second-dns.netcup.net
third-dns.netcup.net
root-dns.netcup.net
SPF Record
✓ Strict (-all)
v=spf1 mx a:hostserver.bt-unternehmensgruppe.de ip4:81.169.240.110 a -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; sp=reject; adkim=r; aspf=r; fo=1; pct=100; ri=86400;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
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
1 record- SPFv=spf1 mx a:hostserver.bt-unternehmensgruppe.de ip4:81.169.240.110 a -all
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