For simplicity of development, I would say go with route 1 but maybe tweak the LetsEncrypt function/verbiage to state "Custom PFX". If somebody is building custom PFX chains they should know what they are doing. Or even keep that as-is and update the ProScan documentation to mention that custom PFX is allowed under the LetsEncrypt function.Thanks for that. I'm have to decide on my end what route to take. 1) Keep it as is (before the test files) or 2) If it is a ClouldFlare Origin cert then use the chain policy AllowUnknownCertificateAuthority. Probably 1.