Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
coralind.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-25 15:16:43 UTC · ↺ Refresh
MX Hostnames
- usb-smtp-inbound-1.mimecast.com
- usb-smtp-inbound-2.mimecast.com
MX Priorities
- usb-smtp-inbound-2.mimecast.com: 20
- usb-smtp-inbound-1.mimecast.com: 10
A / AAAA Records
- 141.193.213.21 (no PTR)
- 141.193.213.20 (no PTR)
Mail Server IPs
- 170.10.152.242 ↩ usb-smtp-delivery-2.mimecast.com
- 170.10.150.242 ↩ usb-smtp-delivery-2.mimecast.com
SOA Record
Raw SOA
ns-cloud-e1.googledomains.com cloud-dns-hostmaster.google.com 1 21600 3600 259200 300
Primary NS (mname)
ns-cloud-e1.googledomains.com
Admin Email (rname)
cloud-dns-hostmaster@google.com
Serial
1
Refresh
21600s
Retry
3600s
Expire
259200s
Minimum TTL
300s
Nameservers (NS)
ns-cloud-e1.googledomains.com
ns-cloud-e2.googledomains.com
ns-cloud-e3.googledomains.com
ns-cloud-e4.googledomains.com
SPF Record
✓ Strict (-all)
v=spf1 a mx ip4:50.87.253.107 exists:%{i}.spf.hc3367-37.iphmx.com ip4:12.150.229.240 ip4:69.65.20.123 ip4:72.167.47.150 include:spf.protection.outlook.com include:icpbounce.com include:usb._netblocks.mimecast.com -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
default._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
8 records- SPFv=spf1 a mx ip4:50.87.253.107 exists:%{i}.spf.hc3367-37.iphmx.com ip4:12.150.229.240 ip4:69.65.20.123 ip4:72.167.47.150 include:spf.protection.outlook.com include:icpbounce.com include:usb._netblocks.mimecast.com -all
- 0ed1fe018a0036d68d04d8489c8555a4e403f46af7
- ibmid=6793d9fc-71ad-4185-9d66-e1a9742bd2e4
- m5b30h05503ls7gbm38kpp74mlkxyf33
- knowbe4-site-verification=24dd0933c23a8bd1a62cabc6f321193d
- GrtLpOLfr89
- MS=ms77918816
- atlassian-domain-verification=FyTvzpft79IdZ/SnaN3xYb02qh0fpoTXxgcDb3JXzUOTfMk5TtgzKgJUMFia/bh4
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 coralind.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits