Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
303boards.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-02 17:14:27 UTC · ↺ Refresh
MX Hostnames
- mail.303boards.com
MX Priorities
- mail.303boards.com: 0
A / AAAA Records
- 23.227.38.65 ↩ myshopify.com
Mail Server IPs
- 192.252.151.16 ↩ s340.sureserver.com
SOA Record
Raw SOA
ns1.server340.com hostmaster.303boards.com 1775143456 16384 2048 1048576 2560
Primary NS (mname)
ns1.server340.com
Admin Email (rname)
hostmaster@303boards.com
Serial
1775143456
Refresh
16384s
Retry
2048s
Expire
1048576s
Minimum TTL
2560s
Nameservers (NS)
ns2.server340.com
ns1.server340.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_spf.www_303boards_com._d.easydmarc.pro ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1;p=reject;sp=reject;pct=100;rua=mailto:[email protected];ruf=mailto:[email protected];ri=86400;aspf=r;adkim=r;fo=1
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 1 found
dkim._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: dkim
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 include:_spf.www_303boards_com._d.easydmarc.pro ~all
- klaviyo-site-verification=TpFCDC
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