Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
callais.com.au
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-14 03:06:02 UTC · ↺ Refresh
MX Hostnames
- callais-group-mx1.firstcloudsecurity.net
- callais-group-mx2.firstcloudsecurity.net
MX Priorities
- callais-group-mx1.firstcloudsecurity.net: 10
- callais-group-mx2.firstcloudsecurity.net: 20
A / AAAA Records
- 104.17.144.110 (no PTR)
- 104.17.145.110 (no PTR)
- 2606:4700::6811:906e (no PTR)
- 2606:4700::6811:916e (no PTR)
Mail Server IPs
- 52.65.142.165 ↩ imx1-sydney.firstcloudsecurity.net
- 54.206.211.164 ↩ imx2-sydney.firstcloudsecurity.net
SOA Record
Raw SOA
alex.ns.cloudflare.com dns.cloudflare.com 2398336405 10000 2400 604800 1800
Primary NS (mname)
alex.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398336405
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
dora.ns.cloudflare.com
alex.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.firstcloudsecurity.net include:spf.protection.outlook.com ip4:103.104.165.196 -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → 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
3 records- WGCLDCT
- SPFv=spf1 include:spf.firstcloudsecurity.net include:spf.protection.outlook.com ip4:103.104.165.196 -all
- MS=ms74518939
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for callais.com.au
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits