Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cjkgroup.com
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-01 14:31:22 UTC · ↺ Refresh
MX Hostnames
- d239664a.ess.barracudanetworks.com
- d239664b.ess.barracudanetworks.com
MX Priorities
- d239664b.ess.barracudanetworks.com: 20
- d239664a.ess.barracudanetworks.com: 10
A / AAAA Records
- 99.83.157.227 ↩ aa1a08f2413674d23.awsglobalaccelerator.com
Mail Server IPs
- 209.222.82.253 ↩ mail.ess.barracuda.com
- 209.222.82.255 ↩ mail.ess.barracuda.com
- 209.222.82.252 ↩ mail.ess.barracuda.com
SOA Record
Raw SOA
marek.ns.cloudflare.com dns.cloudflare.com 2399819949 10000 2400 604800 1800
Primary NS (mname)
marek.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399819949
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
paige.ns.cloudflare.com
marek.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:52.162.235.98 include:spf.sheridan.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; fo=1; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected],mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 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
4 records- SPFv=spf1 ip4:52.162.235.98 include:spf.sheridan.com -all
- MS=ms89487312
- duo_sso_verification=iazdysTfCO1fEAEkcnPRFK9XPxhQ90AM4JNBbjc5STGt38Q0aZXTU69spw50lO1L
- k4vx5jtwf7rlqgc2yfyqtw4d08qqpc8v
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