I can not able to trust certificate setting

Hello garry_chan_3067,

To help us get a better understanding of the issue, we’d like to ask a few questions.

Just to clarify, can you let us know more about the issue you're having when setting up your email? Are you being prompted to turn on trust for SSL/TLS after installing a profile that was sent to you via email, or something else? Are you receiving any specific errors? If so, what does the exact error say?

If you want to trust manually installed certificate profiles, please be sure the process outlined in the link you came from is being used correctly, so we can make sure that's not part of the issue: Trust manually installed certificate profiles in iOS and iPadOS

If you manually install a profile that contains a certificate payload in iOS and iPadOS, that certificate isn't automatically trusted for SSL. Learn how to manually trust an installed certificate profile.

This article is intended for system administrators for a school, business, or other organization.

You must manually turn on trust for SSL/TLS when you install a profile that is sent to you via email or downloaded from a website.

If you want to turn on SSL/TLS trust for that certificate, go to Settings > General > About > Certificate Trust Settings. Under "Enable full trust for root certificates," turn on trust for the certificate.

Apple recommends deploying certificates via Apple Configurator or Mobile Device Management (MDM). Certificate payloads are automatically trusted for SSL when installed with Configurator, MDM, or as part of an MDM enrollment profile.

Thanks!