Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
simstc.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-25 07:16:17 UTC · ↺ Refresh
MX Hostnames
- mail.simstc.com
MX Priorities
- mail.simstc.com: 0
A / AAAA Records
- 50.87.145.249 ↩ com-mod.com
Mail Server IPs
- 50.87.145.249 ↩ com-mod.com
SOA Record
Raw SOA
ns6813.hostgator.com root.gator3407.hostgator.com 2026031703 86400 7200 3600000 86400
Primary NS (mname)
ns6813.hostgator.com
Admin Email (rname)
root@gator3407.hostgator.com
Serial
2026031703
Refresh
86400s
Retry
7200s
Expire
3600000s
Minimum TTL
86400s
Nameservers (NS)
ns6814.hostgator.com
ns6813.hostgator.com
SPF Record
✓ Strict (-all)
v=spf1 +mx +a +ip4:50.87.145.231 +include:websitewelcome.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s; pct=100; fo=1; rf=afrf; ri=86400; rua=mailto:[email protected]; ruf=mailto:[email protected],mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
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- globalsign-domain-verification=2DD53D1A8252225A1020EE92E64DFA8C
- SPFv=spf1 +mx +a +ip4:50.87.145.231 +include:websitewelcome.com -all
Full email verification for simstc.com
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