Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
grahamcorporation.com
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-06 11:55:29 UTC · ↺ Refresh
MX Hostnames
- d298025b.ess.barracudanetworks.com
- d298025a.ess.barracudanetworks.com
MX Priorities
- d298025a.ess.barracudanetworks.com: 4
- d298025b.ess.barracudanetworks.com: 8
A / AAAA Records
- 23.229.181.101 ↩ 101.181.229.23.host.secureserver.net
Mail Server IPs
- 209.222.82.252 ↩ mail.ess.barracuda.com
- 209.222.82.255 ↩ mail.ess.barracuda.com
- 209.222.82.253 ↩ mail.ess.barracuda.com
SOA Record
Raw SOA
ns69.worldnic.com namehost.worldnic.com 125081811 10800 3600 604800 3600
Primary NS (mname)
ns69.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
125081811
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns70.worldnic.com
ns69.worldnic.com
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:50.249.150.209/29 ip4:96.85.59.57 include:spf.ess.barracudanetworks.com include:_spf.psm.knowbe4.com include:spf.protection.outlook.com ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; adkim=r; aspf=r
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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- SPFv=spf1 ip4:50.249.150.209/29 ip4:96.85.59.57 include:spf.ess.barracudanetworks.com include:_spf.psm.knowbe4.com include:spf.protection.outlook.com ~all
- v=5euv2thn48s3tcts1u65r1n7k0
- MS=ms29834038
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 grahamcorporation.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits