Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
byrd-software.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 23:02:51 UTC · ↺ Refresh
MX Hostnames
- mail.byrd-software.de
MX Priorities
- mail.byrd-software.de: 10
A / AAAA Records
- 104.21.80.14 (no PTR)
- 172.67.173.14 (no PTR)
- 2606:4700:3033::ac43:ad0e (no PTR)
- 2606:4700:3032::6815:500e (no PTR)
Mail Server IPs
- 116.203.155.239 ↩ mail.byrd-software.de
- 2a01:4f8:1c1e:518c::1 ↩ mail.byrd-software.de
SOA Record
Raw SOA
ace.ns.cloudflare.com dns.cloudflare.com 2400061609 10000 2400 604800 1800
Primary NS (mname)
ace.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2400061609
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
gwen.ns.cloudflare.com
ace.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 mx a -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 1 found
dkim._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: dkim
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 mx a -all
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