Email DNS records for highmark.co
MX, SPF, DMARC and DKIM records published for highmark.co.
Receives email: Yes Disposable: No Free provider: No SPF: Yes DMARC: Yes
highmark.co can receive email: 1 MX record found. The MX records point to Microsoft mail servers. Authentication records found: SPF, DMARC, DKIM.
| Check | Result | What it means |
|---|---|---|
| MX | Found (1) | The domain is configured to receive email. |
| Mail provider | Microsoft | Inferred from the MX host names: they point to Microsoft mail servers. |
| Free email provider | No | Not a free mailbox service like Gmail or Yahoo. |
| SPF | Found | The record ends with -all: mail from servers not listed should be rejected (hard fail). |
| DMARC | p=reject | The policy is reject: receivers are asked to reject messages that fail DMARC. Subdomains use the policy none (sp=none). Aggregate reports are requested (rua). |
| DKIM | Found (default) | A DKIM public key is published under the selector default. |
Last checked: 2026-10-26 (UTC). DNS records can change over time. This report lists public DNS records; their presence does not by itself mean that a domain or its messages are safe.
Next steps
MX records for highmark.co
- 0 highmark-co.mail.protection.outlook.com (52.101.41.22)
Email authentication records for highmark.co
SPF record
v=spf1 include:spf.protection.outlook.com include:_spf.salesforce.com include:aspmx.pardot.com include:spf.constantcontact.com include:us.exclaimer.net exists:%{ir}.%{v}.arpa._spf.highmark.co -all
DMARC record
v=DMARC1;p=reject;sp=none;pct=100;rua=mailto:0256dec1a6c749ee93e056b62a040316@dmarc-reports.cloudflare.net;aspf=r
DKIM record (default)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA16HdAFIj4Gm52/z1CFGDvNFYIi79TVu4CtG6Zia+zpWOwXEHgBmM1BZdyBZ2KizqPbd71sSC/1HNNMoUsYFlScc6rUSVxqf2b5EwzSiwG4slC7CwGLD5KMUBwb5wIWjXnsUVM1GErFYin2rFi9X5YnyJxLtP0zKTSnMbY4Kur6/tSb6EgLT4an1WvtDzolCKpYyobfi0y5EIUnP0XzG6imfUWZOckDnp7EnaGE8+KBW892+NF0RdEFGUZnO7KBel+8a5OkYOGjmJg28xX/KE2MFmKMaAQlP7WiAlwHEsMVfzfxQip3hKJJDaASJ1lhrR7pi1bsYaIwWmBhlqdzRXNwIDAQAB;
Check a specific email address @highmark.co
This page checks how highmark.co is configured for email. It does not confirm that a specific mailbox exists — to check one address, use the form below.
Server location
Name servers
TXT records for highmark.co
Frequently asked questions
Can highmark.co receive email?
Yes. highmark.co publishes 1 MX record, so it is configured to receive email. To know whether a specific address exists, verify that address.
Does highmark.co use SPF and DMARC?
highmark.co publishes an SPF record. Its DMARC policy is p=reject.
Is highmark.co a free email provider?
No. highmark.co is not on our list of free mailbox providers such as Gmail, Outlook or Yahoo.