Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
doc4design.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-30 08:40:44 UTC · ↺ Refresh
MX Hostnames
- mx2.us.opalstack.com
- mx1.us.opalstack.com
MX Priorities
- mx2.us.opalstack.com: 10
- mx1.us.opalstack.com: 10
A / AAAA Records
- 172.67.209.16 (no PTR)
- 104.21.74.251 (no PTR)
- 2606:4700:3031::6815:4afb (no PTR)
- 2606:4700:3033::ac43:d110 (no PTR)
Mail Server IPs
- 23.82.16.244 ↩ mx2.us.opalstack.com
- 2605:fe80:2100:bf03:7::2 ↩ mx2.us.opalstack.com
- 108.62.123.121 ↩ mx1.us.opalstack.com
SOA Record
Raw SOA
josephine.ns.cloudflare.com dns.cloudflare.com 2399833158 10000 2400 604800 1800
Primary NS (mname)
josephine.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399833158
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
kellen.ns.cloudflare.com
josephine.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.opalstack.com a mx include:_spf.mlsend.com ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
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- mailerlite-domain-verification=e5cd0ec2d5f20d684d417a73f78a9851d9f51b77
- SPFv=spf1 include:spf.opalstack.com a mx include:_spf.mlsend.com ~all
Full email verification for doc4design.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits