flushbug.de

Valid Email Server
Domain Lookup › flushbug.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
flushbug.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-26 12:01:21 UTC · ↺ Refresh

MX Hostnames

  • mailserv.regfish.com

MX Priorities

  • mailserv.regfish.com: 0

A / AAAA Records

  • 178.21.148.33 (no PTR)

Mail Server IPs

  • 52.57.101.90 ↩ mailserv.regfish.com

SOA Record

Raw SOA a.regfish-ns.net dns.regfish-ns.net 1726846386 28800 7200 604800 86400
Primary NS (mname)
a.regfish-ns.net
Admin Email (rname)
dns@regfish-ns.net
Serial
1726846386
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
86400s

Nameservers (NS)

b.regfish-ns.net
c.regfish-ns.net
a.regfish-ns.net

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✗ None detected

No 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=ms85508779
  • SPFv=spf1 include:spf.protection.outlook.com -all
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