Terms of Service
These are Zenithmark's product terms. Zenithmark is a Starhold Software product; see also Starhold Software's umbrella terms of service.
1. What Zenithmark does
Zenithmark takes a domain name, runs a catalog of mail and DNS security checks, and returns a 0–100 score with an evidenced report and copy-paste fixes. To do that, we query public DNS and perform a TLS handshake with your mail and web servers. We read what any resolver, mail server or browser reads, and we never send email to the domain. The service is provided by Copper Jerky LLC, an Arizona limited liability company doing business as Starhold Software (“we”, “us”).
2. Public data only
Zenithmark reads only public information: DNS records, and the public certificates and headers your mail and web servers present to anyone who connects. We do not log in to anything or attempt to exploit any system. You may scan a domain you do not own, since the data is public, but you are responsible for how you use the results. We may rate-limit, block, or refuse scans we believe are abusive.
3. Reports are public to anyone with the link
Each scan produces a report at an unguessable link. Anyone who has the link can view it, and we do not know who you share it with. Do not share a report if its contents are confidential to you. Reports are marked so search engines do not index them, and are deleted after 30 days.
4. No warranty; findings are informational
The service and every report are provided “as is,” without warranties of any kind. A high score is not a guarantee of security, and a finding is not a guarantee of a problem. Zenithmark is one input to your own judgment — it is informational and is not a security certification, audit, or compliance attestation.
5. Acceptable use
Do not use Zenithmark to attack, overload, or gain unauthorized access to any system, to evade our rate limits, or to resell the service without agreement. You will indemnify us only for claims that arise from your misuse of the service or your illegal use of it.
Paid monitoring and the DMARC inbox
Paid plans are bought and managed through your Starhold Account; Polar is the merchant of record. A plan re-checks the domains you add once a day, emails you about changes, and stores DMARC aggregate reports sent to the mailbox we give you. You confirm you are entitled to direct reports for a domain to that mailbox. Checks run once a day, so an alert can lag a change by up to a day; an alert is not a guarantee that nothing else is wrong. Send only DMARC aggregate reports to the mailbox; we drop anything else, and anything oversized or malformed, without reply. We may pause monitoring of a domain if it is abused or your plan ends.
6. Limitation of liability
To the maximum extent permitted by law, we are not liable for indirect, incidental, special, consequential, or punitive damages, or for any loss of data, profits, goodwill, or revenue, including any loss arising from your use of a scan or report. Our total liability for all claims relating to Zenithmark will not exceed the greater of what you paid us in the twelve months before the event, or one hundred U.S. dollars ($100). Some jurisdictions do not allow certain limitations, so parts of this section may not apply to you, and nothing here limits any liability the law does not allow us to limit.
7. Changes
We may update these terms. For a material change we will give you notice, and you have the right to cancel. Using the service after a change is not, by itself, acceptance.
8. Governing law and venue
These terms are governed by the laws of the State of Arizona, without regard to its conflict-of-laws rules. Disputes will be brought in the state or federal courts located in Pima County, Arizona. If you are a consumer, you keep the right to bring a dispute in the courts of your home jurisdiction, and the law of where you live still protects you. There is no class-action waiver in these terms.
9. Contact
Copper Jerky LLC, doing business as Starhold Software — contact form or hello@starhold.dev.
Last updated: 12 November 2026.