Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
smm.us
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-19 00:47:34 UTC · ↺ Refresh
MX Hostnames
- mail.smm.us
MX Priorities
- mail.smm.us: 10
A / AAAA Records
- 72.52.253.70 ↩ dns6.sysop6.com
Mail Server IPs
- 72.52.253.70 ↩ dns6.sysop6.com
SOA Record
Raw SOA
ns1.smm.us raul.sysop.biz 1773438311 10800 3600 604800 10800
Primary NS (mname)
ns1.smm.us
Admin Email (rname)
raul@sysop.biz
Serial
1773438311
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
10800s
Nameservers (NS)
ns1.smm.us
ns2.smm.us
SPF Record
✓ Strict (-all)
v=spf1 a mx ip4:72.52.253.70 -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; adkim=r; aspf=r
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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
1 record- SPFv=spf1 a mx ip4:72.52.253.70 -all
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