You have not chosen to trust "COMODO RSA Certification Authority"

Receiver for Mac users receive the following error message when accessing StoreFront or Web Interface applications:

https://support.comodo.com/index.php?/Knowledgebase/List/Index/71

SHA-2

Download and install Intermediate and Root crt

https://support.comodo.com/index.php?/Knowledgebase/Article/View/966/108/intermediate-1-sha-2-comodo-rsa-certification-authority

Command + Spacebar "Keychain Access"

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