Live data — DNS records and disposable check were just fetched and saved.
Domain Overview
DNS: ⚡ live
Checker: ⚡ live
highmark.co
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-20 21:36:52 UTC · ↺ Refresh
MX Hostnames
- highmark-co.mail.protection.outlook.com
MX Priorities
No priority data.
A / AAAA Records
- 172.67.146.246
- 104.21.95.183
- 2606:4700:3031::ac43:92f6
- 2606:4700:3034::6815:5fb7
Mail Server IPs
No IPs resolved.
SOA Record
No SOA record found.
Nameservers (NS)
byron.ns.cloudflare.com
magdalena.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:_spf.salesforce.com include:aspmx.pardot.com include:spf.constantcontact.com exists:%{ir}.%{v}.arpa._spf.highmark.co -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1;p=reject;sp=none;pct=100;rua=mailto:[email protected];aspf=r
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
default._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
6 records- SPFv=spf1 include:spf.protection.outlook.com include:_spf.salesforce.com include:aspmx.pardot.com include:spf.constantcontact.com exists:%{ir}.%{v}.arpa._spf.highmark.co -all
- box-domain-verification=1903c4c75e1004cfd6866539b102b4418e83142813c3d127f0f6b2c230737a9a
- google-site-verification=1huUfQSV2pdkYG3EeRwpQmsww86SiBWFjslczxGO2S8
- ms=ms61684435
- mscid=Wlf0qvYqFtO4nSbmXlSIQqcTX9VhqO9lBFscZ0jHdbJLu2gDyJEbiiq6flItf4iIxyyu+GOFuCcl35Gp2OuCbQ==
- pardot618131=e39893ef30b24e811cbeb3685d862fd4baa75cd857b0b783dea98c5e6202a8a0
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