Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
hartmann-exact.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-01 22:28:46 UTC · ↺ Refresh
MX Hostnames
- sqmailgate03.tbits.net
- sqmailgate02.tbits.net
- sqmailgate01.tbits.net
MX Priorities
- sqmailgate01.tbits.net: 10
- sqmailgate03.tbits.net: 10
- sqmailgate02.tbits.net: 10
A / AAAA Records
No A/AAAA records found.
Mail Server IPs
- 178.250.224.10 ↩ sqmailgate01.tbits.net
- 178.250.224.16 ↩ sqmailgate03.tbits.net
- 178.250.224.13 ↩ sqmailgate02.tbits.net
SOA Record
Raw SOA
ns1.tbits.net hostmaster.tbits.net 2022102501 43200 3600 3600000 86400
Primary NS (mname)
ns1.tbits.net
Admin Email (rname)
hostmaster@tbits.net
Serial
2022102501
Refresh
43200s
Retry
3600s
Expire
3600000s
Minimum TTL
86400s
Nameservers (NS)
ns1.tbits.net
ns2.tbits.net
SPF Record
✗ Invalid
v=spf1 -all
📊 DNS lookups: 0/10
⚠ Strict -all with no allowed senders — no servers can send email for this domain.
DMARC Record
✓ Reject
v=DMARC1;p=reject;sp=reject;adkim=s;aspf=s
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: reject
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=ms19014874
- SPFv=spf1 -all
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