Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
arch-m.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-21 17:58:29 UTC · ↺ Refresh
MX Hostnames
- mail.energie-m.de
MX Priorities
- mail.energie-m.de: 10
A / AAAA Records
- 178.254.37.67 ↩ energie-m.de
Mail Server IPs
- 178.254.37.67 ↩ energie-m.de
- 2a00:6800:3:954:: (no PTR)
SOA Record
Raw SOA
ns01.1blu.de hostmaster.1blu.de 2026031701 43200 5400 604800 14400
Primary NS (mname)
ns01.1blu.de
Admin Email (rname)
hostmaster@1blu.de
Serial
2026031701
Refresh
43200s
Retry
5400s
Expire
604800s
Minimum TTL
14400s
Nameservers (NS)
ns02.1blu.de
ns01.1blu.de
SPF Record
✓ Strict (-all)
v=spf1 mx -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected];
✓ Reject — strongest protection
📋 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
2 records- SPFv=spf1 mx -all
- google-site-verification=u7f9gWok43Z6pgngj4CGH89B_csmLxuGORHlXm0viPU
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