Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
gopt.us
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-26 16:24:34 UTC · ↺ Refresh
MX Hostnames
- smtp1-mke.securence.com
- smtp1-msp.securence.com
MX Priorities
- smtp1-mke.securence.com: 10
- smtp1-msp.securence.com: 10
A / AAAA Records
- 104.207.254.254 ↩ cloudhost-2776151.us-midwest-1.nxcli.net
Mail Server IPs
- 216.17.3.48 ↩ smtp1.msp.securence.com
SOA Record
Raw SOA
chan.ns.cloudflare.com dns.cloudflare.com 2399717651 10000 2400 604800 1800
Primary NS (mname)
chan.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399717651
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
chan.ns.cloudflare.com
clark.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:199.36.116.209 include:spf.zixsmbhosted.com include:spf.securence.com include:spf.protection.outlook.com include:edgepilot.com ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; pct=100
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._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
4 records- SPFv=spf1 ip4:199.36.116.209 include:spf.zixsmbhosted.com include:spf.securence.com include:spf.protection.outlook.com include:edgepilot.com ~all
- MS=ms52360790
- a92e9651-5b7e-4220-94fb-4aac9ec776b9
- duo_sso_verification=024qzHU0bDCyIzh4GihBlWJpFpgVBXnvbz8LmHWXJHycbPIRUh0V64izEG9D1HBP
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 · Customize →
See demo & docs
Deep verification
Full email verification for gopt.us
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits