Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
do4.tech
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-14 05:06:43 UTC · ↺ Refresh
MX Hostnames
- mail.m2u.io
MX Priorities
- mail.m2u.io: 10
A / AAAA Records
- 151.245.106.119 ↩ mail.m2u.io
Mail Server IPs
- 151.245.106.119 ↩ mail.m2u.io
SOA Record
Raw SOA
harley.ns.cloudflare.com dns.cloudflare.com 2395913418 10000 2400 604800 1800
Primary NS (mname)
harley.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2395913418
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
harley.ns.cloudflare.com
ruth.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 a mx ip4:151.245.106.119 -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 1 found
mail._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 a mx ip4:151.245.106.119 -all
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