Live data — DNS records and disposable check were just fetched and saved.
Domain Overview
DNS: ⚡ live
Checker: ⚡ live
ctu.co.za
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-05-23 11:25:32 UTC · ↺ Refresh
MX Hostnames
- za-smtp-inbound-1.mimecast.co.za
- za-smtp-inbound-2.mimecast.co.za
MX Priorities
No priority data.
A / AAAA Records
- 45.220.167.101
Mail Server IPs
No IPs resolved.
SOA Record
No SOA record found.
Nameservers (NS)
ns3.seidor.network
ns4.seidor.network
ns1.seidor.network
ns2.seidor.network
SPF Record
✓ Strict (-all)
v=spf1 a include:za._netblocks.mimecast.com include:_spf.supportbyrobin.com include:spf.protection.outlook.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; adkim=s; aspf=s;
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._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
3 records- Hibp-verify=dweb_3nrzv4c84qraam5uv9wyn0di
- Google-site-verification=lAmi02epWSFb5aqd3KOA_N5Af373xqKlgBTAdia8HtY
- SPFv=spf1 a include:za._netblocks.mimecast.com include:_spf.supportbyrobin.com include:spf.protection.outlook.com -all
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