Could not find valid certification path to requested target

Could not find valid certification path to requested target

Hi

I'm trying to configure mail fetching using TLS & Port 993 but I keep getting this error.

" FAILURE :E-mail settings saved successfully. Could not find valid certification path to requested target, so kindly configure to apply Trusted/Self Signed Certificate."

All searches point to using a file called gencert but cannot find any working link.

http://kbase.zohocorp.com/kbase/ServiceDeskPlus/TroubleShooting/file_100004.html

Could anyone please help, thanks.

This is a new installation on Server 2012 - Running version 9.2 build 9202

Cheers
Francisco

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