Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
heartshare.org
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 15:22:41 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-1.mimecast.com
- us-smtp-inbound-2.mimecast.com
MX Priorities
- us-smtp-inbound-2.mimecast.com: 10
- us-smtp-inbound-1.mimecast.com: 10
A / AAAA Records
- 99.83.190.102 ↩ aacb0a264e514dd48.awsglobalaccelerator.com
Mail Server IPs
- 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-2.mimecast.com
SOA Record
Raw SOA
ns25.worldnic.com namehost.worldnic.com 126012114 10800 3600 604800 3600
Primary NS (mname)
ns25.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
126012114
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns26.worldnic.com
ns25.worldnic.com
SPF Record
✓ Strict (-all)
v=spf1 include:us._netblocks.mimecast.com include:outboundmail.blackbaud.net ip4:167.89.26.247 ip4:98.0.179.18 include:servers.mcsv.net include:_spf.smtp.com include:sendgrid.net include:spf.protection.outlook.com -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; sp=reject; ri=86400
~ 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
k1._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
9 records- MS=ms36083656
- pejm69vglgs1cm781k103nhv10
- 0ed1fe018aab3d10b59aa24be9b503d2d92025cac4
- SPFv=spf1 include:us._netblocks.mimecast.com include:outboundmail.blackbaud.net ip4:167.89.26.247 ip4:98.0.179.18 include:servers.mcsv.net include:_spf.smtp.com include:sendgrid.net include:spf.protection.outlook.com -all
- google-site-verification=pgnJDhI_QS4rFmgQkyU4LvILZW9uLFKmLj8hOhQJhfg
- apple-domain-verification=UcINiLwBCNbrnC5C
- tdatsol9gmgn3spvvf2us5nabq
- MS=69FABCBFBACB727CD8895003D9C79BFA6620B0C9
- k7bxj6932llqvjf6yqghlb2kn3qz4s91
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 heartshare.org
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits