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How To Fix the “Could Not Establish Trust Relationship for the SSL/TLS Secure Channel with Authority” Error
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Automation Server > Automation Server configuration and administration guide > Initial project configuration > Best practices in the production environment > Security hardening > Mandatory hardening part 1
Mail client shows warning connecting to Plesk mail server: the server to which you are connected uses a security certificate that can not be verified. The main destination name is not valid -
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