Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
tulstar.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-19 21:36:09 UTC · ↺ Refresh
MX Hostnames
- jdyoung-mx1.titanhq.com
- jdyoung-mx2.titanhq.com
MX Priorities
- jdyoung-mx2.titanhq.com: 0
- jdyoung-mx1.titanhq.com: 0
A / AAAA Records
- 185.148.47.31 ↩ server.918host.com
Mail Server IPs
- 3.145.228.208 ↩ us3-smtp2.titanhq.com
- 18.219.82.30 ↩ us3-smtp1.titanhq.com
- 52.14.176.194 ↩ us3-smtp1.titanhq.com
- 3.23.166.50 ↩ us3-smtp2.titanhq.com
SOA Record
Raw SOA
chin.ns.cloudflare.com dns.cloudflare.com 2397634263 10000 2400 604800 1800
Primary NS (mname)
chin.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2397634263
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
chin.ns.cloudflare.com
henry.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 a ip4:184.182.200.91 ip4:184.106.55.51 ip4:74.213.45.251 ip4:99.32.98.81 include:_es.jdyoung.com include:spf.protection.outlook.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
default._domainkey
✓ Public key: 216 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 a ip4:184.182.200.91 ip4:184.106.55.51 ip4:74.213.45.251 ip4:99.32.98.81 include:_es.jdyoung.com include:spf.protection.outlook.com -all
Full email verification for tulstar.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits