Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
gastoncc.com
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 03:59:14 UTC · ↺ Refresh
MX Hostnames
- d310337b.ess.barracudanetworks.com
- d310337a.ess.barracudanetworks.com
MX Priorities
- d310337b.ess.barracudanetworks.com: 10
- d310337a.ess.barracudanetworks.com: 0
A / AAAA Records
- 172.67.171.40 (no PTR)
- 104.21.39.178 (no PTR)
- 2606:4700:3033::6815:27b2 (no PTR)
- 2606:4700:3034::ac43:ab28 (no PTR)
Mail Server IPs
- 209.222.82.255 ↩ mail.ess.barracuda.com
- 209.222.82.252 ↩ mail.ess.barracuda.com
- 209.222.82.253 ↩ mail.ess.barracuda.com
SOA Record
Raw SOA
yichun.ns.cloudflare.com dns.cloudflare.com 2398228204 10000 2400 604800 1800
Primary NS (mname)
yichun.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398228204
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
zita.ns.cloudflare.com
yichun.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 a mx ip4:8.24.204.8/29 ip4:8.24.204.16/31 ip4:8.24.204.18/32 ip4:168.245.14.77/32 ip4:168.245.126.209/32 ip4:168.245.121.127/32 ip4:50.31.61.116/32 include:spf.ess.barracudanetworks.com include:spf.protection.outlook.com include:sendgrid.net include:_spf.google.com -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 5 found
google._domainkey
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
5 records- duo_sso_verification=cNyNFlVLu90MiqA2AeQTLYNiTsQFxOa4249gS0VogFcnP1T8fTaiMqzH57bNtIpd
- google-site-verification=0AaRo1-gGL7QZlHNoYEdxZDlfraeeTbyPNY6dA254xA
- SPFv=spf1 a mx ip4:8.24.204.8/29 ip4:8.24.204.16/31 ip4:8.24.204.18/32 ip4:168.245.14.77/32 ip4:168.245.126.209/32 ip4:168.245.121.127/32 ip4:50.31.61.116/32 include:spf.ess.barracudanetworks.com include:spf.protection.outlook.com include:sendgrid.net include:_spf.google.com -all
- vm0llc5ru4gvf4fp5vshrvplal
- MS=ms52433344
Full email verification for gastoncc.com
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