Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
caci.co.uk
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-04 02:06:39 UTC · ↺ Refresh
MX Hostnames
- mx2.hc4743.c3s2.iphmx.com
- mx1.hc4743.c3s2.iphmx.com
MX Priorities
- mx1.hc4743.c3s2.iphmx.com: 10
- mx2.hc4743.c3s2.iphmx.com: 10
A / AAAA Records
- 141.193.213.11 (no PTR)
- 141.193.213.10 (no PTR)
Mail Server IPs
- 68.232.150.145 ↩ esa1.hc4743.c3s2.iphmx.com
- 68.232.156.124 ↩ esa2.hc4743.c3s2.iphmx.com
SOA Record
Raw SOA
ns-185.awsdns-23.com awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-185.awsdns-23.com
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-185.awsdns-23.com
ns-1874.awsdns-42.co.uk
ns-673.awsdns-20.net
ns-1061.awsdns-04.org
SPF Record
✓ Strict (-all)
v=spf1 a mx ip4:195.173.80.0/23 ip4:195.173.82.0/24 ip4:18.133.121.40 ip4:46.149.111.0/24 ip4:68.232.128.0/19 include:spf.protection.outlook.com include:26914085.spf08.hubspotemail.net ?include:mktomail.com include:sent-via.netsuite.com -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1;p=reject;pct=100;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
11 records- MS=ms99304052
- as=1502101874
- atlassian-domain-verification=noEDfAVxgGjc1OP7OjOFK3xZgN1zQR2/WzcfEMCudrokEmVR7FQhCaS50jicrp09
- dell-technologies-domain-verification=caci.co.uk_04833735-5c29-43d1-8687-3a819e761291_1720712377
- docusign=99287f55-5fa8-44c1-a149-903fa869db57
- ejf1pokmaloul5ldh7snfvd760
- google-site-verification=Nmd63lfcaae2Gq6MJWWbMgkh3irE2ltcrHqr7S9yT1c
- google-site-verification=TiEdSBLGwBDp5jK5feO-8CExwRnkPYJt0v8qrVQ0QaU
- hj4N0fMoNXmgwOk95HGnMC+d0zZKcYQB5MhWvNHLxpVG2wD6qPA2E1DiTzGfXowbF2v8nnwzboEgqCoxaxMQrw==
- jamf-site-verification=twf6TPaPhxgIYlJW1FtwiQ
- SPFv=spf1 a mx ip4:195.173.80.0/23 ip4:195.173.82.0/24 ip4:18.133.121.40 ip4:46.149.111.0/24 ip4:68.232.128.0/19 include:spf.protection.outlook.com include:26914085.spf08.hubspotemail.net ?include:mktomail.com include:sent-via.netsuite.com -all
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 caci.co.uk
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits