Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
letsos.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-21 06:05:32 UTC · ↺ Refresh
MX Hostnames
- mail.letsos.com
MX Priorities
- mail.letsos.com: 10
A / AAAA Records
- 50.236.238.163 (no PTR)
Mail Server IPs
- 50.236.239.2 ↩ mail.letsos.com
SOA Record
Raw SOA
ns33.worldnic.com namehost.worldnic.com 126022316 10800 3600 604800 3600
Primary NS (mname)
ns33.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
126022316
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns34.worldnic.com
ns33.worldnic.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:50.236.239.2 -all
📊 DNS lookups: 0/10
✓ 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
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 ip4:50.236.239.2 -all
Full email verification for letsos.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits