Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
grainchain.io
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-01 21:51:54 UTC · ↺ Refresh
MX Hostnames
- d208355b.ess.barracudanetworks.com
- d208355a.ess.barracudanetworks.com
MX Priorities
- d208355a.ess.barracudanetworks.com: 1
- d208355b.ess.barracudanetworks.com: 1
A / AAAA Records
- 172.66.40.164 (no PTR)
- 172.66.43.92 (no PTR)
- 2606:4700:3108::ac42:28a4 (no PTR)
- 2606:4700:3108::ac42:2b5c (no PTR)
Mail Server IPs
- 209.222.82.252 ↩ mail.ess.barracuda.com
- 209.222.82.255 ↩ mail.ess.barracuda.com
- 209.222.82.253 ↩ mail.ess.barracuda.com
SOA Record
Raw SOA
charles.ns.cloudflare.com dns.cloudflare.com 2400194616 10000 2400 604800 1800
Primary NS (mname)
charles.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2400194616
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
fay.ns.cloudflare.com
charles.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:_spf.google.com include:servers.mcsv.net include:spf.ess.barracudanetworks.com include:spf.mandrillapp.com include:amazonses.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict 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
✓ 2 found
google._domainkey
k1._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
9 records- mandrill_verify.3LQH1TreZKWIjybnXuXe5Q
- SPFv=spf1 include:_spf.google.com include:servers.mcsv.net include:spf.ess.barracudanetworks.com include:spf.mandrillapp.com include:amazonses.com -all
- MS=ms14241677
- ZOOM_verify_ubPpdD0ZQpWWGbgtj5h92Q
- apple-domain-verification=hTw7YB7rscSPUOop
- atlassian-domain-verification=Iq7r1Q5kuJ2l6+4pC8wQy2dCJ4XFpYgRnZm884L0xX8buk6kEDHRznaPDEYV2/4G
- google-site-verification=0xSBgC9a8oBqT6wfXCpJcjk-6ZYodJFhMsNmgONXimg
- google-site-verification=Cb33RiRTeW8pDzSdqauNCo9IWijjMesrrwJ9mAlCF94
- google-site-verification=PFv8BCi37vUIM6xY4GDNK5_KaOFCrlBJzeeZpbo_Yi8
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