Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cmcfc.org
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-23 17:57:59 UTC · ↺ Refresh
MX Hostnames
- d312761b.ess.barracudanetworks.com
- d312761a.ess.barracudanetworks.com
MX Priorities
- d312761a.ess.barracudanetworks.com: 10
- d312761b.ess.barracudanetworks.com: 20
A / AAAA Records
No A/AAAA records found.
Mail Server IPs
- 209.222.82.252 ↩ mail.ess.barracuda.com
- 209.222.82.253 ↩ mail.ess.barracuda.com
- 209.222.82.255 ↩ mail.ess.barracuda.com
SOA Record
Raw SOA
ns-352.awsdns-44.com awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-352.awsdns-44.com
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-616.awsdns-13.net
ns-1317.awsdns-36.org
ns-1730.awsdns-24.co.uk
ns-352.awsdns-44.com
SPF Record
✓ Strict (-all)
v=spf1 mx a ip4:192.131.141.0/24 include:spf.ess.barracudanetworks.com include:mailgun.org include:psm.knowbe4.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; fo=1; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected],mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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 mx a ip4:192.131.141.0/24 include:spf.ess.barracudanetworks.com include:mailgun.org include:psm.knowbe4.com -all
Full email verification for cmcfc.org
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