Overview
Polygon One is a web-based platform. In corporate networks with firewalls, proxy servers, or email security software, access to the platform or links in our emails may be blocked.Domains for the Whitelist
The following domains should be allowed in your firewall, proxy, and email security software:All domains use HTTPS (port 443) exclusively. Unencrypted connections are not used.
Common Problems
SSL Certificate Error
Symptom: The browser displaysNET::ERR_CERT_AUTHORITY_INVALID or “Your connection is not private”.
Cause: Your corporate firewall performs SSL/TLS inspection and replaces the Polygon One certificate with an internal certificate that the browser does not trust.
Solution:
- exempt
app.polygon-one.comfrom SSL inspection, or - install the internal corporate CA certificate in the browser’s trusted root certificate store
Links in Emails Do Not Work
Symptom: Invitation or activation links from Polygon One emails lead to an error page or an invalid URL. Cause: Email security software such as Microsoft Defender Safe Links, Proofpoint, or Mimecast rewrites or shortens URLs during scanning. Solution:- whitelist
app.polygon-one.comandcontact.polygon-one.comin the email security software - alternatively, copy the link directly from the email and open it manually in the browser
Emails Land in Spam
Symptom: Emails from Polygon One land in the spam or junk folder. Solution:- classify the sender address
invite@contact.polygon-one.comas trusted - allow the domain
contact.polygon-one.comin the email security software - mark emails from
@contact.polygon-one.comin the spam folder as “Not junk”