Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
demo.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-23 09:14:55 UTC · ↺ Refresh
MX Hostnames
- usb-smtp-inbound-1.mimecast.com
- usb-smtp-inbound-2.mimecast.com
MX Priorities
- usb-smtp-inbound-2.mimecast.com: 10
- usb-smtp-inbound-1.mimecast.com: 10
A / AAAA Records
- 151.101.66.165 (no PTR)
- 151.101.130.165 (no PTR)
- 151.101.194.165 (no PTR)
- 151.101.2.165 (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
ns1.markmonitor.com keberman.idgenterprise.com 2025060806 10800 3600 1728000 21600
Primary NS (mname)
ns1.markmonitor.com
Admin Email (rname)
keberman@idgenterprise.com
Serial
2025060806
Refresh
10800s
Retry
3600s
Expire
1728000s
Minimum TTL
21600s
Nameservers (NS)
ns6.markmonitor.com
ns7.markmonitor.com
ns1.markmonitor.com
ns2.markmonitor.com
ns3.markmonitor.com
ns4.markmonitor.com
ns5.markmonitor.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com ip4:66.186.113.137 a:mta1.pcworld.com a:mta2.pcworld.com include:_spf.google.com include:usb._netblocks.mimecast.com ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1;
⚠ p=none — monitoring only, no enforcement
📋 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
5 records- 0ed1fe018a25c15a351a10481ca0cfbc5e7b4fe468
- mCIi81xcCprtOnYdu07+f/tKHaKvTU2ZYXANYc4I490ZXwzQvx8UHeNAtaRWePvN2IuulJm2byuB38dtRwtQJA==
- SPFv=spf1 include:spf.protection.outlook.com ip4:66.186.113.137 a:mta1.pcworld.com a:mta2.pcworld.com include:_spf.google.com include:usb._netblocks.mimecast.com ~all
- MS=ms92638180
- fsdd-verification-324996-12102020
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 demo.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits