


If users are supposed to log in to MailStore Server from outside the organization's network without a VPN using MailStore Client, MailStore Outlook Add-in or the Web Access, the URIs mentioned in this article must be resolvable via DNS on the Internet and port-forwardings to the MailStore Server computer must be set up on the firewall or router if necessary.Using a certificate that is signed by a trusted certificate authority or using Let's Encrypt certificates is highly recommended. For best user experience, the certificate used by MailStore Server should be trusted by all clients and the used web browsers.Prerequisites, Recommendations and Limitations 4 Running Directory Services Synchronization.2.6 Configuring API Permissions in Azure AD.2.5 Configuring the Redirect URI in MailStore Server.2.4 Configuring App Authentication in Azure AD.2.2 Creating Credentials in MailStore Server.2.1 Registering of MailStore Server as App in Azure AD.2 Connecting MailStore Server and Microsoft 365.

1 Prerequisites, Recommendations and Limitations.
