Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
johnstonesupply.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 03:55:28 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-2.mimecast.com
- us-smtp-inbound-1.mimecast.com
MX Priorities
- us-smtp-inbound-2.mimecast.com: 10
- us-smtp-inbound-1.mimecast.com: 10
A / AAAA Records
- 35.86.42.23 ↩ ec2-35-86-42-23.us-west-2.compute.amazonaws.com
- 34.213.16.100 ↩ ec2-34-213-16-100.us-west-2.compute.amazonaws.com
Mail Server IPs
- 170.10.128.141 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-1.mimecast.com
SOA Record
Raw SOA
ns-1696.awsdns-20.co.uk awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1696.awsdns-20.co.uk
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-171.awsdns-21.com
ns-685.awsdns-21.net
ns-1395.awsdns-46.org
ns-1696.awsdns-20.co.uk
SPF Record
✓ Soft Fail (~all)
v=spf1 redirect=7l94phti._spf._d.mim.ec
📊 DNS lookups: 1/10
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
✓ 4 found
mail._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 redirect=7l94phti._spf._d.mim.ec
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 johnstonesupply.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits