Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
prucenter.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 23:36:05 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-2.mimecast.com
- us-smtp-inbound-1.mimecast.com
MX Priorities
- us-smtp-inbound-1.mimecast.com: 10
- us-smtp-inbound-2.mimecast.com: 20
A / AAAA Records
- 98.80.109.31 ↩ ec2-98-80-109-31.compute-1.amazonaws.com
Mail Server IPs
- 170.10.128.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.221 ↩ 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
- 170.10.128.221 ↩ us-smtp-inbound-2.mimecast.com
SOA Record
Raw SOA
edns1.ultradns.com dnssupport.verisign-grs.com 2283183586 28800 7200 1209600 86400
Primary NS (mname)
edns1.ultradns.com
Admin Email (rname)
dnssupport@verisign-grs.com
Serial
2283183586
Refresh
28800s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
edns1.ultradns.net
edns1.ultradns.org
edns1.ultradns.biz
edns1.ultradns.com
SPF Record
✓ Strict (-all)
v=spf1 include:coremotivesmarketing.com include:spf.protection.outlook.com include:spf.mandrillapp.com include:spf.exclaimer.net include:_spf.salesforce.com include:us._netblocks.mimecast.com ip4:209.104.34.8 ip4:209.104.45.8 ip4:209.104.56.8 ip4:108.60.144.50 -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; sp=reject; fo=1;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
dkim._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
5 records- X0mgWhDI12S+euAduaQOpN94luWR1y5Vhuy+thFUk5vo3MlOxsi4r4zruruS0YWgPTPMvGURD9cJsaLBJgn0tA==
- SPFv=spf1 include:coremotivesmarketing.com include:spf.protection.outlook.com include:spf.mandrillapp.com include:spf.exclaimer.net include:_spf.salesforce.com include:us._netblocks.mimecast.com ip4:209.104.34.8 ip4:209.104.45.8 ip4:209.104.56.8 ip4:108.60.144.50 -all
- MS=ms52256474
- knowbe4-site-verification=9e9c53d12013121f9a8b9b01150edca1
- 82p/9PZ0r2CIKpbQ5Sqqg/hhRYoM3LZheIsvlUVAuEUVMfLWwHM8XB9efTetSJONQxRDtQx3ZpBxJZ0JQXrWWQ==
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 prucenter.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits